Update .gitattributes

prefsCleaner 1.2
- Search string made case-sensitive, because Firefox preferences are. - The script now uses regex, which allows it to understand `user.js` files formatted using single quotes, spaces and/or tabs in `user_pref` lines. Trade-off: it can no longer reset preferences that include some special characters in their names. Not an issue for now, just something to remember. See full discussion [here](https://github.com/ghacksuserjs/ghacks-user.js/pull/321).
2025-09-01 01:18:30 +02:00 · 2017-12-30 19:33:25 +01:00 · 2017-12-30 19:25:57 +01:00 · 2017-12-29 20:14:08 +00:00 · 2017-12-27 16:49:00 +01:00 · 2017-12-27 20:23:27 +13:00
12 changed files with 1531 additions and 117 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -1,8 +1,14 @@
-* text=auto
+## * text=auto

-*.js text
-*.md text
-*.yml text
-*.txt text
+*.js text=auto
+*.md text=auto
+*.yml text=auto
+*.txt text=auto
+*.sh text=auto
+*.bat eol=crlf

 *.png binary
+
+.gitattributes export-ignore
+*.yml export-ignore
+wikipiki export-ignore
--- a/README.md
+++ b/README.md
@ -2,36 +2,20 @@
 A `user.js` is a configuration file that can control hundreds of Firefox settings. For a more technical breakdown and explanation, you can read more on the [overview](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.1-Overview) wiki page.

 ### ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/bullet01.png) ghacks user.js
-The [ghacks user.js](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/user.js) is a template, which, as provided, aims (![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/exclamation.png) with [extensions](https://github.com/ghacksuserjs/ghacks-user.js/wiki/Appendix-B:-Extensions) <sup>1</sup> ) to provide as much privacy and enhanced security as possible, and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen).
+The `ghacks user.js` is a **template**, which, as provided, aims to provide as much privacy and enhanced security as possible, and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen).

-We aim to INFORM and give you CHOICES. No one size fits all, so customize it! And not all sites have the same requirements, so use [profiles](https://github.com/ghacksuserjs/ghacks-user.js/wiki/2.3-Concurrent-Profiles) with custom versions. We won't set you wrong.
+Everyone, experts included, should at least read the [implementation](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation) wiki page, as it contains important information regarding a few `ghacks user.js` settings.

-INFORMATION IS POWER. So you can make informed decisions to better protect yourself online, we aim to be:
-
-* Accessible (provide information and simpler, less-technical descriptions if possible)
-* Accountable (provide reputable references/sources, [test sites](https://github.com/ghacksuserjs/ghacks-user.js/wiki/Appendix-C:-Test-Sites), dispel bad advice)
-* Change trackable (yay! we're on github now, with commits)
-* Compatible (including a [deprecated section](https://github.com/ghacksuserjs/ghacks-user.js/issues/123), [releases](https://github.com/ghacksuserjs/ghacks-user.js/releases))
-* Comprehensive (including enforcing defaults and future-proofing)
-* Current and up-to-date with stable (including [changelogs](https://github.com/ghacksuserjs/ghacks-user.js/search?q=label%3Achangelog&type=Issues&utf8=%E2%9C%93))
-* Detailed (preference versioning, hidden preference information, explanations, and more)
-* Easy to use and discuss (sections, sub-sections, numbering)
-* Helpful (including a [wiki](https://github.com/ghacksuserjs/ghacks-user.js/wiki) with features such as [extensions](https://github.com/ghacksuserjs/ghacks-user.js/wiki/Appendix-B:-Extensions), [user scripts](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-User-Scripts), [references](https://github.com/ghacksuserjs/ghacks-user.js/wiki/Appendix-D:-References) and more)
-* Innovative (formatting, special tags, and future plans such as branches)
-
-### ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/bullet01.png) usage
-Everyone, experts included, should at least read the [implementation](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation) wiki page, as it contains important information regarding a few default settings we use. The rest of the [wiki](https://github.com/ghacksuserjs/ghacks-user.js/wiki) is helpful as well.
+Sitemap: [Releases](https://github.com/ghacksuserjs/ghacks-user.js/releases), [changelogs](https://github.com/ghacksuserjs/ghacks-user.js/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3Achangelog), [Wiki](https://github.com/ghacksuserjs/ghacks-user.js/wiki), [stickies](https://github.com/ghacksuserjs/ghacks-user.js/issues?q=is%3Aissue+is%3Aopen+label%3A%22sticky+topic%22)

 ### ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/bullet01.png) acknowledgments
 Literally thousands of sources, references and suggestions. That said...

-* Martin Brinkmann at [ghacks](https://www.ghacks.net/) <sup>2</sup>
-   * 100% genuine super-nice all-around good guy
+* Martin Brinkmann at [ghacks](https://www.ghacks.net/) <sup>1</sup>
 * The ghacks community and commentators
-   * Special mentions to [earthlng](https://github.com/earthlng), Tom Hawack, Just me, Conker, Rockin’ Jerry, Ainatar, Parker Lewis
-* [12bytes](http://12bytes.org/articles/tech/firefoxgecko-configuration-guide-for-privacy-and-performance-buffs)
+* [12bytes](http://12bytes.org/tech/firefoxgecko-configuration-guide-for-privacy-and-performance-buffs)
   * The 12bytes article now uses this user.js and supplements it with an additonal JS hosted right [here](https://github.com/atomGit/Firefox-user.js) at github

-<sup>1</sup> ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/exclamation.png) Important: We HIGHLY recommend using uBlock Origin, uMatrix and a cookie extension. Section 0400, if modified, allows Tracking Protection and Safe Browsing to be disabled. Do this at your own risk. See the [implementation](https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation) wiki page for more.
+<sup>1</sup> The ghacks user.js was an independent project by [Thorin-Oakenpants](https://github.com/Thorin-Oakenpants) started in early 2015 and was [first published](https://www.ghacks.net/2015/08/18/a-comprehensive-list-of-firefox-privacy-and-security-settings/) at ghacks in August 2015. With Martin Brinkmann's blessing, it will keep the ghacks name.

-<sup>2</sup> The ghacks user.js was an independent project by [Thorin-Oakenpants](https://github.com/Thorin-Oakenpants) started in early 2015 and was [first published](https://www.ghacks.net/2015/08/18/a-comprehensive-list-of-firefox-privacy-and-security-settings/) at ghacks in August 2015. It was kept up-to-date and expanded by the original author with three major updates and articles. With Martin Brinkmann's blessing, it will keep the ghacks name.
+### ![](https://github.com/ghacksuserjs/ghacks-user.js/blob/master/wikipiki/bullet01.png) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
--- a/prefsCleaner.bat
+++ b/prefsCleaner.bat
@ -0,0 +1,113 @@
+@ECHO OFF
+TITLE prefs.js cleaner
+
+REM ### prefs.js cleaner for Windows
+REM ## author: @claustromaniac
+REM ## version: 1.2
+
+SETLOCAL EnableDelayedExpansion
+:begin
+ECHO:
+ECHO:
+ECHO                 ########################################
+ECHO                 ####  prefs.js cleaner for Windows  ####
+ECHO                 ####        by claustromaniac       ####
+ECHO                 ####              v1.2              ####
+ECHO                 ########################################
+ECHO:
+CALL :message "This script should be run from your Firefox profile directory."
+ECHO   It will remove any entries from prefs.js that also exist in user.js.
+CALL :message "This will allow inactive preferences to be reset to their default values."
+ECHO   This Firefox profile shouldn't be in use during the process.
+CALL :message ""
+TIMEOUT 1 /nobreak >nul
+CHOICE /C SHE /N /M "Start [S] Help [H] Exit [E]"
+CLS
+IF ERRORLEVEL 3 (EXIT /B)
+IF ERRORLEVEL 2 (GOTO :showhelp)
+IF NOT EXIST "user.js" (CALL :abort "user.js not found in the current directory." 30)
+IF NOT EXIST "prefs.js" (CALL :abort "prefs.js not found in the current directory." 30)
+CALL :FFcheck
+CALL :message "Backing up prefs.js..."
+COPY /B /V /Y prefs.js "prefs-backup-!date:/=-!_!time::=.!.js"
+CALL :message "Cleaning prefs.js..."
+CALL :cleanup
+CLS
+CALL :message "All done^!"
+TIMEOUT 5 >nul
+EXIT /B
+
+REM ########## Abort Function ###########
+:abort
+CALL :message %1
+TIMEOUT %~2 >nul
+EXIT
+REM ########## Message Function #########
+:message
+SETLOCAL DisableDelayedExpansion
+ECHO:
+ECHO:  %~1
+ECHO:
+ENDLOCAL
+GOTO :EOF
+REM ####### Firefox Check Function ######
+:FFcheck
+TASKLIST /FI "IMAGENAME eq firefox.exe" 2>NUL | FIND /I /N "firefox.exe">NUL
+IF NOT ERRORLEVEL 1 (
+	CLS
+	CALL :message "Firefox is still running."
+	ECHO   If you're not currently using this profile you can continue, otherwise
+	CALL :message "close Firefox first^!"
+	ECHO:
+	PAUSE
+	CLS
+	CALL :message "Resuming..."
+	TIMEOUT 5 /nobreak >nul
+)
+GOTO :EOF
+REM ######### Cleanup Function ##########
+:cleanup
+SETLOCAL DisableDelayedExpansion
+(
+	FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" prefs.js') DO (
+		SET "_line=%%H"
+		SETLOCAL EnableDelayedExpansion
+		IF /I "user_pref"=="!_line:~0,9!" (
+			FOR /F tokens^=2^ delims^=^" %%I IN ("!_line:.=\.!") DO (
+				FINDSTR /R /C:"user_pref[ 	]*\([ 	]*[\"']%%I[\"'][ 	]*," user.js >nul
+				IF ERRORLEVEL 1 (ECHO:!_line!)
+			)
+		) ELSE (
+			ECHO:!_line!
+		)
+		ENDLOCAL
+	)
+)>tempcleanedprefs
+ENDLOCAL
+MOVE /Y tempcleanedprefs prefs.js
+GOTO :EOF
+REM ############### Help ##################
+:showhelp
+MODE 80,34
+CLS
+CALL :message "This script creates a backup of your prefs.js file before doing anything."
+ECHO   It should be safe, but you can follow these steps if something goes wrong:
+ECHO:
+CALL :message "  1. Make sure Firefox is closed."
+ECHO     2. Delete prefs.js in your profile folder.
+CALL :message "  3. Delete Invalidprefs.js if you have one in the same folder."
+ECHO     4. Rename or copy your latest backup to prefs.js.
+CALL :message "  5. Run Firefox and see if you notice anything wrong with it."
+ECHO     6. If you do notice something wrong, especially with your extensions,
+CALL :message "     and/or with the UI, go to about:support, and restart Firefox with"
+ECHO        add-ons disabled. Then, restart it again normally, and see if the
+CALL :message "     problems were solved."
+ECHO:
+CALL :message "If you are able to identify the cause of your issues, please bring it up"
+ECHO   on ghacks-user.js GitHub repository.
+ECHO:
+ECHO:
+PAUSE
+CLS
+GOTO :begin
+REM #####################################
--- a/scratchpad-scripts/ghacks-clear-57-[changes-only].js
+++ b/scratchpad-scripts/ghacks-clear-57-[changes-only].js
@ -0,0 +1,61 @@
+/***
+
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+
+***/
+
+(function() {
+  let ops = [
+    /* --- 57-alpha --- */
+    /* commented out */
+    'browser.storageManager.enabled',
+    'dom.storageManager.enabled',
+    /* removed from the user.js */
+    'browser.search.geoip.timeout',
+    'geo.wifi.xhr.timeout',
+    'gfx.layerscope.enabled',
+    'media.webspeech.recognition.enable',
+    /* moved to RFP ALTERNATIVES */
+    'dom.w3c_touch_events.enabled',
+    'media.video_stats.enabled',
+    /* moved to DEPRECATED/REMOVED */
+    'browser.bookmarks.showRecentlyBookmarked',
+    'browser.casting.enabled',
+    'devtools.webide.autoinstallFxdtAdapters',
+    'media.eme.chromium-api.enabled',
+    'social.directories',
+    'social.enabled',
+    'social.remote-install.enabled',
+    'social.share.activationPanelEnabled',
+    'social.shareDirectory',
+    'social.toast-notifications.enabled',
+    'social.whitelist',
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/scratchpad-scripts/ghacks-clear-all-up-to-57-[RFP-alternatives].js
+++ b/scratchpad-scripts/ghacks-clear-all-up-to-57-[RFP-alternatives].js
@ -0,0 +1,60 @@
+/***
+
+ This will reset the preferences that are under sections 4600 & 4700 in the ghacks user.js
+ up to and including release 57-alpha. These are the prefs that are no longer necessary,
+ or they conlfict with, privacy.resistFingerprinting if you have that enabled.
+
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+
+***/
+ 
+(function() {
+  let ops = [
+    /* section 4600 */
+    'dom.maxHardwareConcurrency',
+    'dom.enable_resource_timing',
+    'dom.enable_performance',
+    'device.sensors.enabled',
+    'browser.zoom.siteSpecific',
+    'dom.gamepad.enabled',
+    'dom.netinfo.enabled',
+    'media.webspeech.synth.enabled',
+    'geo.enabled',
+    'media.video_stats.enabled',
+    'dom.w3c_touch_events.enabled',
+    /* section 4700 */
+    'general.useragent.override',
+    'general.buildID.override',
+    'general.appname.override',
+    'general.appversion.override',
+    'general.platform.override',
+    'general.oscpu.override',
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/scratchpad-scripts/ghacks-clear-all-up-to-57-[deprecated].js
+++ b/scratchpad-scripts/ghacks-clear-all-up-to-57-[deprecated].js
@ -0,0 +1,167 @@
+/***
+
+ This will reset the preferences that have been deprecated by Mozilla
+ and used in the ghacks user.js up to and including release 57-alpha
+
+ It is in reverse order, so feel free to remove sections that do not apply
+
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+
+***/
+
+(function() {
+  let ops = [
+    /* deprecated */
+
+    /* ESR52.x users can remove sections 53-57 but it is not
+       crucial as your user.js will reinstate them */
+    /* 57 */
+    'social.whitelist',
+    'social.toast-notifications.enabled',
+    'social.shareDirectory',
+    'social.remote-install.enabled',
+    'social.directories',
+    'social.share.activationPanelEnabled',
+    'social.enabled',
+    'media.eme.chromium-api.enabled',
+    'devtools.webide.autoinstallFxdtAdapters',
+    'browser.casting.enabled',
+    'browser.bookmarks.showRecentlyBookmarked',
+    /* 56 */
+    'extensions.screenshots.system-disabled',
+    'extensions.formautofill.experimental',
+    /* 55 */
+    'geo.security.allowinsecure',
+    'browser.selfsupport.enabled',
+    'browser.selfsupport.url',
+    'browser.newtabpage.directory.ping',
+    'browser.formfill.saveHttpsForms',
+    'browser.formautofill.enabled',
+    'dom.enable_user_timing',
+    'dom.keyboardevent.code.enabled',
+    'browser.tabs.animate',
+    'browser.fullscreen.animate',
+    /* 54 */
+    'browser.safebrowsing.reportMalwareMistakeURL',
+    'browser.safebrowsing.reportPhishMistakeURL',
+    'media.eme.apiVisible',
+    'dom.archivereader.enabled',
+    /* 53 */
+    'security.tls.unrestricted_rc4_fallback',
+    'plugin.scan.Acrobat',
+    'plugin.scan.Quicktime',
+    'plugin.scan.WindowsMediaPlayer',
+    'media.getusermedia.screensharing.allow_on_old_platforms',
+    'dom.beforeAfterKeyboardEvent.enabled',
+    /* End of ESR52.x section */
+
+    /* 52 */
+    'network.http.sendSecureXSiteReferrer',
+    'media.gmp-eme-adobe.enabled',
+    'media.gmp-eme-adobe.visible',
+    'media.gmp-eme-adobe.autoupdate',
+    'dom.telephony.enabled',
+    'dom.battery.enabled',
+    /* 51 */
+    'media.block-play-until-visible',
+    'dom.vr.oculus050.enabled',
+    'network.http.spdy.enabled.v3-1',
+    /* 50 */
+    'browser.usedOnWindows10.introURL',
+    'plugins.update.notifyUser',
+    'browser.safebrowsing.enabled',
+    'security.ssl3.ecdhe_ecdsa_rc4_128_sha',
+    'security.ssl3.ecdhe_rsa_rc4_128_sha',
+    'security.ssl3.rsa_rc4_128_md5',
+    'security.ssl3.rsa_rc4_128_sha',
+    'plugins.update.url',
+    /* 49 */
+    'loop.enabled',
+    'loop.server',
+    'loop.feedback.formURL',
+    'loop.feedback.manualFormURL',
+    'loop.facebook.appId',
+    'loop.facebook.enabled',
+    'loop.facebook.fallbackUrl',
+    'loop.facebook.shareUrl',
+    'loop.logDomains',
+    'dom.disable_window_open_feature.scrollbars',
+    'dom.push.udp.wakeupEnabled',
+    /* 48 */
+    'browser.urlbar.unifiedcomplete',
+    /* 47 */
+    'toolkit.telemetry.unifiedIsOptIn',
+    'datareporting.healthreport.about.reportUrlUnified',
+    'browser.history.allowPopState',
+    'browser.history.allowPushState',
+    'browser.history.allowReplaceState',
+    /* 46 */
+    'datareporting.healthreport.service.enabled',
+    'datareporting.healthreport.documentServerURI',
+    'datareporting.policy.dataSubmissionEnabled.v2',
+    'browser.safebrowsing.appRepURL',
+    'browser.polaris.enabled',
+    'browser.pocket.enabled',
+    'browser.pocket.api',
+    'browser.pocket.site',
+    'browser.pocket.oAuthConsumerKey',
+    /* 45 */
+    'browser.sessionstore.privacy_level_deferred',
+    /* 44 */
+    'browser.safebrowsing.provider.google.appRepURL',
+    'security.tls.insecure_fallback_hosts.use_static_list',
+    'dom.workers.sharedWorkers.enabled',
+    'dom.disable_image_src_set',
+    /* 43 */
+    'browser.safebrowsing.gethashURL',
+    'browser.safebrowsing.updateURL',
+    'browser.safebrowsing.malware.reportURL',
+    'browser.trackingprotection.gethashURL',
+    'browser.trackingprotection.updateURL',
+    'pfs.datasource.url',
+    'browser.search.showOneOffButtons',
+    /* 42 and earlier */
+    'privacy.clearOnShutdown.passwords', // 42
+    'full-screen-api.approval-required', // 42
+    'browser.safebrowsing.reportErrorURL', // 41
+    'browser.safebrowsing.reportGenericURL', // 41
+    'browser.safebrowsing.reportMalwareErrorURL', // 41
+    'browser.safebrowsing.reportMalwareURL', // 41
+    'browser.safebrowsing.reportURL', // 41
+    'plugins.enumerable_names', // 41
+    'network.http.spdy.enabled.http2draft', // 41
+    'camera.control.autofocus_moving_callback.enabled', // 37
+    'privacy.donottrackheader.value', // 36
+    'network.websocket.enabled', // 35
+    'dom.network.enabled', // 31
+    'pageThumbs.enabled', // 25
+
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/scratchpad-scripts/ghacks-clear-all-up-to-57-[removed].js
+++ b/scratchpad-scripts/ghacks-clear-all-up-to-57-[removed].js
@ -0,0 +1,63 @@
+/***
+
+ This will reset the preferences that have been removed completely
+ from the ghacks user.js up to and including release 57-alpha
+
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+
+***/
+ 
+(function() {
+  let ops = [
+    /* removed in ghacks user.js v52-57 */
+    /* 52-alpha */
+    'browser.search.reset.enabled',
+    'browser.search.reset.whitelist',
+    /* 54-alpha */
+    'browser.migrate.automigrate.enabled',
+    'services.sync.enabled',
+    'webextensions.storage.sync.enabled',
+    'webextensions.storage.sync.serverURL',
+    /* 55-alpha */
+    'dom.keyboardevent.dispatch_during_composition', // default is false anyway
+    'dom.vr.oculus.enabled', // covered by dom.vr.enabled
+    'dom.vr.openvr.enabled', // ditto
+    'dom.vr.osvr.enabled', // ditto
+    'extensions.pocket.api', // covered by extensions.pocket.enabled
+    'extensions.pocket.oAuthConsumerKey', // ditto
+    'extensions.pocket.site', // ditto
+    /* 56-alpha: none */
+    /* 57-alpha */
+    'geo.wifi.xhr.timeout', // covered by geo.enabled
+    'browser.search.geoip.timeout', // ditto
+    'media.webspeech.recognition.enable', // default is false anyway
+    'gfx.layerscope.enabled', // default is false anyway
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/scratchpad-scripts/ghacks-clear-all-up-to-57-[the-rest-active].js
+++ b/scratchpad-scripts/ghacks-clear-all-up-to-57-[the-rest-active].js
@ -0,0 +1,409 @@
+/***
+
+ This will reset EVERYTHING that is ACTIVE in the ghacks user.js
+ release 57-alpha master, but excludes the following:
+ - prefs removed since publishing on github
+ - e10s section 1100
+ - privacy.resistFingerprinting alternatives sections 4600 & 4700
+ - deprecated section 9999
+
+ It does not matter if you clear everything, as a restart will reapply your user.js
+ Total 477 prefs from 57-alpha master: 118 inactive, 359 active
+ These have been broken into two scripts for convenience
+ 
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+ 
+***/
+ 
+(function() {
+  let ops = [
+    /* 359 ACTIVE prefs in 57-alpha master */
+    'accessibility.force_disabled',
+    'alerts.showFavicons',
+    'app.update.auto',
+    'app.update.service.enabled',
+    'app.update.silent',
+    'app.update.staging.enabled',
+    'beacon.enabled',
+    'breakpad.reportURL',
+    'browser.aboutHomeSnippets.updateUrl',
+    'browser.backspace_action',
+    'browser.bookmarks.max_backups',
+    'browser.cache.disk.capacity',
+    'browser.cache.disk.enable',
+    'browser.cache.disk.smart_size.enabled',
+    'browser.cache.disk.smart_size.first_run',
+    'browser.cache.disk_cache_ssl',
+    'browser.cache.frecency_experiment',
+    'browser.cache.offline.enable',
+    'browser.crashReports.unsubmittedCheck.autoSubmit',
+    'browser.crashReports.unsubmittedCheck.enabled',
+    'browser.ctrlTab.previews',
+    'browser.display.use_document_fonts',
+    'browser.download.folderList',
+    'browser.download.forbid_open_with',
+    'browser.download.hide_plugins_without_extensions',
+    'browser.download.manager.addToRecentDocs',
+    'browser.download.useDownloadDir',
+    'browser.eme.ui.enabled',
+    'browser.fixup.alternate.enabled',
+    'browser.fixup.hide_user_pass',
+    'browser.formfill.enable',
+    'browser.helperApps.deleteTempFileOnExit',
+    'browser.laterrun.enabled',
+    'browser.library.activity-stream.enabled',
+    'browser.link.open_newwindow',
+    'browser.link.open_newwindow.restriction',
+    'browser.newtab.preload',
+    'browser.newtabpage.activity-stream.enabled',
+    'browser.newtabpage.directory.source',
+    'browser.newtabpage.enabled',
+    'browser.newtabpage.enhanced',
+    'browser.newtabpage.introShown',
+    'browser.offline-apps.notify',
+    'browser.onboarding.enabled',
+    'browser.pagethumbnails.capturing_disabled',
+    'browser.ping-centre.telemetry',
+    'browser.rights.3.shown',
+    'browser.safebrowsing.downloads.remote.enabled',
+    'browser.safebrowsing.downloads.remote.url',
+    'browser.safebrowsing.provider.google.reportMalwareMistakeURL',
+    'browser.safebrowsing.provider.google.reportPhishMistakeURL',
+    'browser.safebrowsing.provider.google.reportURL',
+    'browser.safebrowsing.provider.google4.reportMalwareMistakeURL',
+    'browser.safebrowsing.provider.google4.reportPhishMistakeURL',
+    'browser.safebrowsing.provider.google4.reportURL',
+    'browser.safebrowsing.reportPhishURL',
+    'browser.search.countryCode',
+    'browser.search.geoip.url',
+    'browser.search.geoSpecificDefaults',
+    'browser.search.geoSpecificDefaults.url',
+    'browser.search.region',
+    'browser.search.suggest.enabled',
+    'browser.search.update',
+    'browser.send_pings',
+    'browser.send_pings.require_same_host',
+    'browser.sessionhistory.max_entries',
+    'browser.sessionstore.interval',
+    'browser.sessionstore.max_tabs_undo',
+    'browser.sessionstore.max_windows_undo',
+    'browser.sessionstore.privacy_level',
+    'browser.sessionstore.resume_from_crash',
+    'browser.shell.checkDefaultBrowser',
+    'browser.shell.shortcutFavicons',
+    'browser.slowStartup.maxSamples',
+    'browser.slowStartup.notificationDisabled',
+    'browser.slowStartup.samples',
+    'browser.ssl_override_behavior',
+    'browser.startup.homepage_override.mstone',
+    'browser.tabs.closeWindowWithLastTab',
+    'browser.tabs.crashReporting.sendReport',
+    'browser.tabs.insertRelatedAfterCurrent',
+    'browser.tabs.loadDivertedInBackground',
+    'browser.tabs.loadInBackground',
+    'browser.tabs.selectOwnerOnClose',
+    'browser.tabs.warnOnClose',
+    'browser.tabs.warnOnCloseOtherTabs',
+    'browser.tabs.warnOnOpen',
+    'browser.taskbar.lists.enabled',
+    'browser.taskbar.lists.frequent.enabled',
+    'browser.taskbar.lists.recent.enabled',
+    'browser.taskbar.lists.tasks.enabled',
+    'browser.taskbar.previews.enable',
+    'browser.uitour.enabled',
+    'browser.uitour.url',
+    'browser.urlbar.autoFill',
+    'browser.urlbar.autoFill.typed',
+    'browser.urlbar.clickSelectsAll',
+    'browser.urlbar.decodeURLsOnCopy',
+    'browser.urlbar.doubleClickSelectsAll',
+    'browser.urlbar.filter.javascript',
+    'browser.urlbar.maxHistoricalSearchSuggestions',
+    'browser.urlbar.oneOffSearches',
+    'browser.urlbar.speculativeConnect.enabled',
+    // 'browser.urlbar.suggest.bookmark', // this may not get reset by your user.js - see issue #308
+    // 'browser.urlbar.suggest.history', // ditto
+    // 'browser.urlbar.suggest.openpage', // ditto
+    'browser.urlbar.suggest.searches',
+    'browser.urlbar.trimURLs',
+    'browser.urlbar.usepreloadedtopurls.enabled',
+    'browser.urlbar.userMadeSearchSuggestionsChoice',
+    'browser.xul.error_pages.expert_bad_cert',
+    'camera.control.face_detection.enabled',
+    'canvas.capturestream.enabled',
+    'captivedetect.canonicalURL',
+    'datareporting.healthreport.about.reportUrl',
+    'datareporting.healthreport.uploadEnabled',
+    'datareporting.policy.dataSubmissionEnabled',
+    'device.storage.enabled',
+    'devtools.chrome.enabled',
+    'devtools.debugger.remote-enabled',
+    'devtools.webide.autoinstallADBHelper',
+    'devtools.webide.enabled',
+    'dom.allow_cut_copy',
+    'dom.allow_scripts_to_close_windows',
+    'dom.caches.enabled',
+    'dom.disable_beforeunload',
+    'dom.disable_window_flip',
+    'dom.disable_window_move_resize',
+    'dom.disable_window_open_feature.close',
+    'dom.disable_window_open_feature.location',
+    'dom.disable_window_open_feature.menubar',
+    'dom.disable_window_open_feature.minimizable',
+    'dom.disable_window_open_feature.personalbar',
+    'dom.disable_window_open_feature.resizable',
+    'dom.disable_window_open_feature.status',
+    'dom.disable_window_open_feature.titlebar',
+    'dom.disable_window_open_feature.toolbar',
+    'dom.disable_window_status_change',
+    'dom.event.clipboardevents.enabled',
+    'dom.flyweb.enabled',
+    'dom.idle-observers-api.enabled',
+    'dom.imagecapture.enabled',
+    'dom.IntersectionObserver.enabled',
+    'dom.ipc.plugins.flash.subprocess.crashreporter.enabled',
+    'dom.ipc.plugins.reportCrashURL',
+    'dom.popup_allowed_events',
+    'dom.popup_maximum',
+    'dom.push.connection.enabled',
+    'dom.push.enabled',
+    'dom.push.serverURL',
+    'dom.push.userAgentID',
+    'dom.serviceWorkers.enabled',
+    'dom.vibrator.enabled',
+    'dom.webaudio.enabled',
+    'dom.webnotifications.enabled',
+    'dom.webnotifications.serviceworker.enabled',
+    'dom.workers.enabled',
+    'experiments.activeExperiment',
+    'experiments.enabled',
+    'experiments.manifest.uri',
+    'experiments.supported',
+    'extensions.autoDisableScopes',
+    'extensions.blocklist.enabled',
+    'extensions.blocklist.url',
+    'extensions.enabledScopes',
+    'extensions.formautofill.addresses.enabled',
+    'extensions.formautofill.available',
+    'extensions.formautofill.creditCards.enabled',
+    'extensions.formautofill.heuristics.enabled',
+    'extensions.getAddons.cache.enabled',
+    'extensions.getAddons.showPane',
+    'extensions.pocket.enabled',
+    'extensions.shield-recipe-client.api_url',
+    'extensions.shield-recipe-client.enabled',
+    'extensions.update.autoUpdateDefault',
+    'extensions.webcompat-reporter.enabled',
+    'extensions.webextensions.keepStorageOnUninstall',
+    'extensions.webextensions.keepUuidOnUninstall',
+    'extensions.webservice.discoverURL',
+    'font.blacklist.underline_offset',
+    'full-screen-api.enabled',
+    'general.useragent.compatMode.firefox',
+    'general.useragent.locale',
+    'general.warnOnAboutConfig',
+    'geo.wifi.uri',
+    'gfx.downloadable_fonts.enabled',
+    'gfx.downloadable_fonts.woff2.enabled',
+    'gfx.font_rendering.graphite.enabled',
+    'gfx.font_rendering.opentype_svg.enabled',
+    'gfx.offscreencanvas.enabled',
+    'intl.accept_languages',
+    'intl.locale.matchOS',
+    'intl.regional_prefs.use_os_locales',
+    'javascript.options.asmjs',
+    'javascript.options.wasm',
+    'javascript.use_us_english_locale',
+    'keyword.enabled',
+    'layers.acceleration.disabled',
+    'layout.css.font-loading-api.enabled',
+    'layout.css.visited_links_enabled',
+    'layout.spellcheckDefault',
+    'lightweightThemes.update.enabled',
+    'mathml.disabled',
+    'media.autoplay.enabled',
+    'media.block-autoplay-until-in-foreground',
+    'media.eme.enabled',
+    'media.getusermedia.audiocapture.enabled',
+    'media.getusermedia.browser.enabled',
+    'media.getusermedia.screensharing.allowed_domains',
+    'media.getusermedia.screensharing.enabled',
+    'media.gmp-gmpopenh264.autoupdate',
+    'media.gmp-gmpopenh264.enabled',
+    'media.gmp-manager.updateEnabled',
+    'media.gmp-manager.url',
+    'media.gmp-manager.url.override',
+    'media.gmp-provider.enabled',
+    'media.gmp-widevinecdm.autoupdate',
+    'media.gmp-widevinecdm.enabled',
+    'media.gmp-widevinecdm.visible',
+    'media.gmp.trial-create.enabled',
+    'media.navigator.enabled',
+    'media.navigator.video.enabled',
+    'media.ondevicechange.enabled',
+    'media.peerconnection.enabled',
+    'media.peerconnection.ice.default_address_only',
+    'media.peerconnection.ice.no_host',
+    'media.peerconnection.ice.tcp',
+    'media.peerconnection.identity.enabled',
+    'media.peerconnection.identity.timeout',
+    'media.peerconnection.turn.disable',
+    'media.peerconnection.use_document_iceservers',
+    'media.peerconnection.video.enabled',
+    'middlemouse.contentLoadURL',
+    'network.allow-experiments',
+    'network.auth.subresource-img-cross-origin-http-auth-allow',
+    'network.captive-portal-service.enabled',
+    'network.cookie.cookieBehavior',
+    'network.cookie.leave-secure-alone',
+    'network.cookie.thirdparty.sessionOnly',
+    'network.dns.blockDotOnion',
+    'network.dns.disablePrefetch',
+    'network.dns.disablePrefetchFromHTTPS',
+    'network.http.altsvc.enabled',
+    'network.http.altsvc.oe',
+    'network.http.redirection-limit',
+    'network.http.referer.hideOnionSource',
+    'network.http.referer.spoofSource',
+    'network.http.referer.trimmingPolicy',
+    'network.http.referer.userControlPolicy',
+    'network.http.referer.XOriginPolicy',
+    'network.http.referer.XOriginTrimmingPolicy',
+    'network.http.sendRefererHeader',
+    'network.http.spdy.enabled',
+    'network.http.spdy.enabled.deps',
+    'network.http.spdy.enabled.http2',
+    'network.http.speculative-parallel-limit',
+    'network.IDN_show_punycode',
+    'network.jar.block-remote-files',
+    'network.jar.open-unsafe-types',
+    'network.manage-offline-status',
+    'network.predictor.enable-prefetch',
+    'network.predictor.enabled',
+    'network.prefetch-next',
+    'network.protocol-handler.external.ms-windows-store',
+    'network.proxy.autoconfig_url.include_path',
+    'network.proxy.socks_remote_dns',
+    'network.stricttransportsecurity.preloadlist',
+    'offline-apps.allow_by_default',
+    'pdfjs.disabled',
+    'pdfjs.enableWebGL',
+    'permissions.manager.defaultsUrl',
+    'plugin.default.state',
+    'plugin.defaultXpi.state',
+    'plugin.scan.plid.all',
+    'plugin.sessionPermissionNow.intervalInMinutes',
+    'plugins.click_to_play',
+    'privacy.clearOnShutdown.cache',
+    'privacy.clearOnShutdown.cookies',
+    'privacy.clearOnShutdown.downloads',
+    'privacy.clearOnShutdown.formdata',
+    'privacy.clearOnShutdown.history',
+    'privacy.clearOnShutdown.offlineApps',
+    'privacy.clearOnShutdown.sessions',
+    'privacy.clearOnShutdown.siteSettings',
+    'privacy.cpd.cache',
+    'privacy.cpd.cookies',
+    'privacy.cpd.formdata',
+    'privacy.cpd.history',
+    'privacy.cpd.offlineApps',
+    'privacy.cpd.passwords',
+    'privacy.cpd.sessions',
+    'privacy.cpd.siteSettings',
+    'privacy.donottrackheader.enabled',
+    'privacy.firstparty.isolate',
+    'privacy.firstparty.isolate.restrict_opener_access',
+    'privacy.resistFingerprinting',
+    'privacy.sanitize.sanitizeOnShutdown',
+    'privacy.sanitize.timeSpan',
+    'privacy.trackingprotection.ui.enabled',
+    'security.ask_for_password',
+    'security.block_script_with_wrong_mime',
+    'security.cert_pinning.enforcement_level',
+    'security.csp.enable',
+    'security.csp.experimentalEnabled',
+    'security.data_uri.block_toplevel_data_uri_navigations',
+    'security.dialog_enable_delay',
+    'security.family_safety.mode',
+    'security.fileuri.strict_origin_policy',
+    'security.insecure_field_warning.contextual.enabled',
+    'security.insecure_password.ui.enabled',
+    'security.mixed_content.block_active_content',
+    'security.mixed_content.send_hsts_priming',
+    'security.mixed_content.use_hsts',
+    'security.OCSP.enabled',
+    'security.OCSP.require',
+    'security.password_lifetime',
+    'security.pki.sha1_enforcement_level',
+    'security.sri.enable',
+    'security.ssl.disable_session_identifiers',
+    'security.ssl.enable_ocsp_stapling',
+    'security.ssl.errorReporting.automatic',
+    'security.ssl.errorReporting.enabled',
+    'security.ssl.errorReporting.url',
+    'security.ssl.treat_unsafe_negotiation_as_broken',
+    'security.tls.enable_0rtt_data',
+    'security.tls.version.fallback-limit',
+    'security.tls.version.max',
+    'security.tls.version.min',
+    'security.xpconnect.plugin.unrestricted',
+    'services.blocklist.signing.enforced',
+    'services.blocklist.update_enabled',
+    'signon.autofillForms',
+    'signon.autofillForms.http',
+    'signon.formlessCapture.enabled',
+    'signon.storeWhenAutocompleteOff',
+    'startup.homepage_override_url',
+    'startup.homepage_welcome_url',
+    'startup.homepage_welcome_url.additional',
+    'toolkit.telemetry.archive.enabled',
+    'toolkit.telemetry.bhrPing.enabled',
+    'toolkit.telemetry.cachedClientID',
+    'toolkit.telemetry.enabled',
+    'toolkit.telemetry.firstShutdownPing.enabled',
+    'toolkit.telemetry.newProfilePing.enabled',
+    'toolkit.telemetry.server',
+    'toolkit.telemetry.shutdownPingSender.enabled',
+    'toolkit.telemetry.unified',
+    'toolkit.telemetry.updatePing.enabled',
+    'ui.submenuDelay',
+    'ui.use_standins_for_native_colors',
+    'view_source.tab',
+    'webchannel.allowObject.urlWhitelist',
+    'webgl.disable-extensions',
+    'webgl.disable-fail-if-major-performance-caveat',
+    'webgl.disabled',
+    'webgl.dxgl.enabled',
+    'webgl.enable-debug-renderer-info',
+    'webgl.enable-webgl2',
+    'webgl.min_capability_mode',
+
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/scratchpad-scripts/ghacks-clear-all-up-to-57-[the-rest-inactive].js
+++ b/scratchpad-scripts/ghacks-clear-all-up-to-57-[the-rest-inactive].js
@ -0,0 +1,167 @@
+/***
+
+ This will reset EVERYTHING that is INACTIVE in the ghacks user.js
+ release 57-alpha master, but excludes the following:
+ - prefs removed since publishing on github
+ - e10s section 1100
+ - privacy.resistFingerprinting alternatives sections 4600 & 4700
+ - deprecated section 9999
+
+ It does not matter if you clear everything, as a restart will reapply your user.js
+ Total 477 prefs from 57-alpha master: 118 inactive, 359 active
+ These have been broken into two scripts for convenience
+ 
+ For instructions see:
+ https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-Resetting-Inactive-Prefs-[Scripts]
+
+***/
+ 
+(function() {
+  let ops = [
+    /* 118 INACTIVE prefs in 57-alpha master */
+    'accessibility.typeaheadfind',
+    'app.update.enabled',
+    'browser.cache.memory.capacity',
+    'browser.cache.memory.enable',
+    'browser.chrome.favicons',
+    'browser.chrome.site_icons',
+    'browser.download.autohideButton',
+    'browser.privatebrowsing.autostart',
+    'browser.safebrowsing.allowOverride',
+    'browser.safebrowsing.blockedURIs.enabled',
+    'browser.safebrowsing.downloads.enabled',
+    'browser.safebrowsing.downloads.remote.block_dangerous',
+    'browser.safebrowsing.downloads.remote.block_dangerous_host',
+    'browser.safebrowsing.downloads.remote.block_potentially_unwanted',
+    'browser.safebrowsing.downloads.remote.block_uncommon',
+    'browser.safebrowsing.malware.enabled',
+    'browser.safebrowsing.phishing.enabled',
+    'browser.safebrowsing.provider.google.gethashURL',
+    'browser.safebrowsing.provider.google.updateURL',
+    'browser.safebrowsing.provider.google4.gethashURL',
+    'browser.safebrowsing.provider.google4.updateURL',
+    'browser.safebrowsing.provider.mozilla.gethashURL',
+    'browser.safebrowsing.provider.mozilla.updateURL',
+    'browser.sessionhistory.max_total_viewers',
+    'browser.startup.page',
+    'browser.stopReloadAnimation.enabled',
+    'browser.storageManager.enabled',
+    'browser.tabs.loadBookmarksInTabs',
+    'browser.urlbar.autocomplete.enabled',
+    'browser.urlbar.maxRichResults',
+    'clipboard.autocopy',
+    'dom.event.contextmenu.enabled',
+    'dom.indexedDB.enabled',
+    'dom.presentation.controller.enabled',
+    'dom.presentation.discoverable',
+    'dom.presentation.discovery.enabled',
+    'dom.presentation.enabled',
+    'dom.presentation.receiver.enabled',
+    'dom.presentation.session_transport.data_channel.enable',
+    'dom.storage.enabled',
+    'dom.storageManager.enabled',
+    'dom.vr.enabled',
+    'extensions.screenshots.disabled',
+    'extensions.systemAddon.update.url',
+    'extensions.update.enabled',
+    'font.name.monospace.x-unicode',
+    'font.name.monospace.x-western',
+    'font.name.sans-serif.x-unicode',
+    'font.name.sans-serif.x-western',
+    'font.name.serif.x-unicode',
+    'font.name.serif.x-western',
+    'font.system.whitelist',
+    'full-screen-api.warning.delay',
+    'full-screen-api.warning.timeout',
+    'general.autoScroll',
+    'geo.wifi.logging.enabled',
+    'gfx.direct2d.disabled',
+    'javascript.options.baselinejit',
+    'javascript.options.ion',
+    'media.flac.enabled',
+    'media.mediasource.enabled',
+    'media.mediasource.mp4.enabled',
+    'media.mediasource.webm.audio.enabled',
+    'media.mediasource.webm.enabled',
+    'media.mp4.enabled',
+    'media.ogg.enabled',
+    'media.ogg.flac.enabled',
+    'media.opus.enabled',
+    'media.raw.enabled',
+    'media.wave.enabled',
+    'media.webm.enabled',
+    'media.wmf.amd.vp9.enabled',
+    'media.wmf.enabled',
+    'media.wmf.vp9.enabled',
+    'network.cookie.lifetime.days',
+    'network.cookie.lifetimePolicy',
+    'network.dns.disableIPv6',
+    'network.dnsCacheEntries',
+    'network.dnsCacheExpiration',
+    'network.http.fast-fallback-to-IPv4',
+    'offline-apps.quota.warn',
+    'permissions.memory_only',
+    'places.history.enabled',
+    'plugin.state.flash',
+    'privacy.clearOnShutdown.openWindows',
+    'privacy.cpd.downloads',
+    'privacy.cpd.openWindows',
+    'privacy.resistFingerprinting.block_mozAddonManager',
+    'privacy.trackingprotection.annotate_channels',
+    'privacy.trackingprotection.enabled',
+    'privacy.trackingprotection.lower_network_priority',
+    'privacy.trackingprotection.pbmode.enabled',
+    'privacy.usercontext.about_newtab_segregation.enabled',
+    'privacy.userContext.enabled',
+    'privacy.userContext.longPressBehavior',
+    'privacy.userContext.ui.enabled',
+    'privacy.window.maxInnerHeight',
+    'privacy.window.maxInnerWidth',
+    'reader.parse-on-load.enabled',
+    'security.mixed_content.block_display_content',
+    'security.nocertdb',
+    'security.ssl.require_safe_negotiation',
+    'security.ssl3.dhe_rsa_aes_128_sha',
+    'security.ssl3.dhe_rsa_aes_256_sha',
+    'security.ssl3.ecdhe_ecdsa_aes_128_sha',
+    'security.ssl3.ecdhe_rsa_aes_128_sha',
+    'security.ssl3.rsa_aes_128_sha',
+    'security.ssl3.rsa_aes_256_sha',
+    'security.ssl3.rsa_des_ede3_sha',
+    'services.blocklist.addons.collection',
+    'services.blocklist.gfx.collection',
+    'services.blocklist.onecrl.collection',
+    'services.blocklist.plugins.collection',
+    'signon.rememberSignons',
+    'svg.disabled',
+    'toolkit.cosmeticAnimations.enabled',
+    'urlclassifier.trackingTable',
+    'xpinstall.signatures.required',
+    /* reset parrot: check your open about:config after running the script */
+    '_user.js.parrot'
+  ]
+
+  if("undefined" === typeof(Services)) {
+    alert("about:config needs to be the active tab!");
+    return;
+  }
+  
+  let c = 0;
+  for (let i = 0, len = ops.length; i < len; i++) {
+    if (Services.prefs.prefHasUserValue(ops[i])) {   
+      Services.prefs.clearUserPref(ops[i]);
+      if (!Services.prefs.prefHasUserValue(ops[i])) {
+        console.log("reset", ops[i]);
+        c++;
+      } else { console.log("failed to reset", ops[i]); }
+    }
+  }
+  
+  focus();
+  
+  let d = (c==1) ? " pref" : " prefs";
+  if (c > 0) {
+    alert("successfully reset " + c + d + "\n\nfor details check the Browser Console (Ctrl+Shift+J)");
+  } else { alert("nothing to reset"); }
+  
+})();
--- a/updater.bat
+++ b/updater.bat
@ -0,0 +1,264 @@
+@ECHO OFF & SETLOCAL EnableDelayedExpansion
+TITLE ghacks user.js updater
+
+REM ## ghacks-user.js updater for Windows
+REM ## author: @claustromaniac
+REM ## version: 4.2
+REM ## instructions: https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.3-Updater-Scripts
+
+SET _myname=%~n0
+SET _myparams=%*
+:parse
+IF "%~1"=="" (GOTO endparse)
+IF /I "%~1"=="-unattended" (SET _ua=1)
+IF /I "%~1"=="-log" (SET _log=1)
+IF /I "%~1"=="-logp" (SET _log=1 & SET _logp=1)
+IF /I "%~1"=="-multioverrides" (SET _multi=1)
+IF /I "%~1"=="-merge" (SET _merge=1)
+IF /I "%~1"=="-updatebatch" (SET _updateb=1)
+SHIFT
+GOTO parse
+:endparse
+IF DEFINED _updateb (
+	REM The normal flow here goes from phase 1 to phase 2 and then phase 3.
+	IF NOT "!_myname:~0,9!"=="[updated]" (
+		IF EXIST "[updated]!_myname!.bat" (
+			REM ## Phase 3 ##: The new script, with the original name, will:
+			REM 	* Delete the [updated]*.bat script
+			REM 	* Begin the normal routine
+			REN "[updated]!_myname!.bat" "[updated]!_myname!.bat.old"
+			DEL /F "[updated]!_myname!.bat.old"
+			CALL :message "Script updated^!"
+			TIMEOUT 3 >nul
+			CLS
+			GOTO begin
+		)
+		REM ## Phase 1 ##
+		REM 	* Download new batch and name it [updated]*.bat
+		REM 	* Start that script in a new CMD window
+		REM 	* Exit
+		CALL :message "Updating script..."
+		REM Uncomment the next line and comment the powershell call for testing.
+		REM COPY /B /V /Y "!_myname!.bat" "[updated]!_myname!.bat"
+		(
+			powershell -Command "(New-Object Net.WebClient).DownloadFile('https://github.com/ghacksuserjs/ghacks-user.js/raw/master/updater.bat', '[updated]!_myname!.bat')"
+		) >nul 2>&1
+		IF EXIST "[updated]!_myname!.bat" (
+			START /min CMD /C "[updated]!_myname!.bat" !_myparams!
+			EXIT /B
+		) ELSE (
+			CALL :message "Failed. Make sure PowerShell is allowed internet access."
+			TIMEOUT 120 >nul
+			EXIT /B
+		)
+	) ELSE (
+		IF "!_myname!"=="[updated]" (
+			CALL :message "The [updated] label is reserved. Rename this script and try again."
+			TIMEOUT 300 >nul
+		) ELSE (
+			REM ## Phase 2 ##: The [updated]*.bat script will:
+			REM 	* Copy itself overwriting the original batch
+			REM 	* Start that script in a new CMD instance
+			REM 	* Exit
+			IF EXIST "!_myname:~9!.bat" (
+				REN "!_myname:~9!.bat" "!_myname:~9!.bat.old"
+				DEL /F "!_myname:~9!.bat.old"
+			)
+			COPY /B /V /Y "!_myname!.bat" "!_myname:~9!.bat"
+			START CMD /C "!_myname:~9!.bat" !_myparams!
+		)
+		EXIT /B
+	)
+)
+:begin
+ECHO:
+ECHO:
+ECHO:                ########################################
+ECHO:                ####  user.js Updater for Windows   ####
+ECHO:                ####       by claustromaniac        ####
+ECHO:                ####             v4.2               ####
+ECHO:                ########################################
+ECHO:
+SET /A "_line=0"
+IF NOT EXIST user.js (
+	CALL :message "user.js not detected in the current directory."
+) ELSE (
+	FOR /F "skip=1 tokens=1,2 delims=:" %%G IN (user.js) DO (
+		SET /A "_line+=1"
+		IF !_line! GEQ 4 (GOTO exitloop)
+		IF !_line! EQU 1 (SET _name=%%H)
+		IF !_line! EQU 2 (SET _date=%%H)
+		IF !_line! EQU 3 (SET _version=%%G)
+	)
+	:exitloop
+	IF !_line! GEQ 4 (
+		IF /I NOT "!_name!"=="!_name:ghacks=!" (
+			CALL :message "ghacks user.js !_version:~2!,!_date!"
+		) ELSE (
+			CALL :message "Current user.js version not recognised."
+		)
+	) ELSE (
+		CALL :message "Current user.js version not recognised."
+	)
+)
+ECHO:
+IF NOT DEFINED _ua (
+	CALL :message "This batch should be run from your Firefox profile directory."
+	ECHO:  It will download the latest version of ghacks user.js from github and then
+	CALL :message "append any of your own changes from user-overrides.js to it."
+	CALL :message "Visit the wiki for more detailed information."
+	ECHO:
+	TIMEOUT 1 /nobreak >nul
+	CHOICE /C SHE /N /M "Start [S] Help [H] Exit [E]"
+	CLS
+	IF ERRORLEVEL 3 (EXIT /B)
+	IF ERRORLEVEL 2 (GOTO :showhelp)
+)
+IF DEFINED _log (
+	CALL :log >>user.js-update-log.txt 2>&1
+	IF DEFINED _logp (START user.js-update-log.txt)
+	EXIT /B
+	:log
+	SET _log=2
+	ECHO:##################################################################
+	CALL :message "%date%, %time%"
+)
+IF EXIST user.js.old.bak (DEL /F user.js.old.bak)
+IF EXIST user.js (
+	IF EXIST user.js.bak (REN user.js.bak user.js.old.bak)
+	REN user.js user.js.bak
+	CALL :message "Current user.js file backed up."
+)
+CALL :message "Retrieving latest user.js file from github repository..."
+(
+	powershell -Command "(New-Object Net.WebClient).DownloadFile('https://github.com/ghacksuserjs/ghacks-user.js/raw/master/user.js', 'user.js')"
+) >nul 2>&1
+IF EXIST user.js (
+	IF DEFINED _multi (
+		FORFILES /P user.js-overrides /M *.js >nul 2>&1
+		IF NOT ERRORLEVEL 1 (
+			IF DEFINED _merge (
+				CALL :message "Merging..."
+				COPY /B /V /Y user.js-overrides\*.js user-overrides-merged.js
+				CALL :merge user-overrides-merged.js
+				COPY /B /V /Y user.js+user-overrides-merged.js user.js
+				CALL :merge user.js
+			) ELSE (
+				CALL :message "Appending..."
+				COPY /B /V /Y user.js+"user.js-overrides\*.js" user.js
+			)
+		) ELSE (CALL :message "No override files found.")
+		ECHO:
+	) ELSE (
+		IF EXIST "user-overrides.js" (
+			COPY /B /V /Y user.js+"user-overrides.js" "user.js"
+			IF DEFINED _merge (
+				CALL :message "Merging user-overrides.js..."
+				CALL :merge user.js
+			) ELSE (
+				CALL :message "user-overrides.js appended."
+			)
+		) ELSE (CALL :message "user-overrides.js not found.")
+		ECHO:
+	)
+	CALL :message "Handling backups..."
+	SET "changed="
+	IF EXIST user.js.bak (
+		FC user.js.bak user.js >nul && SET "changed=false" || SET "changed=true"
+	)
+	IF "!changed!"=="true" (
+		IF EXIST user.js.old.bak DEL /F user.js.old.bak
+		CALL :message "Update complete."
+	) ELSE (
+		IF "!changed!"=="false" (
+			DEL /F user.js.bak
+			IF EXIST user.js.old.bak REN user.js.old.bak user.js.bak
+			CALL :message "Update completed without changes."
+		) ELSE (CALL :message "Update complete.")
+	)
+	ECHO:
+) ELSE (
+	IF EXIST user.js.bak (REN user.js.bak user.js)
+	IF EXIST user.js.old.bak (REN user.js.old.bak user.js.bak)
+	CALL :message "Update failed. Make sure PowerShell is allowed internet access."
+	ECHO:   No changes were made.
+)
+IF NOT DEFINED _log (
+	IF NOT DEFINED _ua (PAUSE)
+)
+EXIT /B
+
+REM ########### Message Function ###########
+:message
+SETLOCAL DisableDelayedExpansion
+IF NOT "2"=="%_log%" (ECHO:)
+ECHO:  %~1
+IF NOT "2"=="%_log%" (ECHO:)
+ENDLOCAL
+GOTO :EOF
+REM ############ Merge function ############
+:merge
+SETLOCAL DisableDelayedExpansion
+(
+	FOR /F "tokens=1,* delims=," %%G IN ('FINDSTR /B /I /C:"user_pref" "%~1"') DO (SET "%%G=%%H")
+	FOR /F "tokens=1,* delims=:" %%I IN ('FINDSTR /N "^" "%~1"') DO (
+		IF ""=="%%J" (
+			ECHO:
+		) ELSE (
+			FOR /F "delims=," %%K IN ("%%J") DO (
+				IF NOT [user_pref("_user.js.parrot"]==[%%K] (
+					IF DEFINED %%K (
+						SETLOCAL EnableDelayedExpansion
+						FOR /F "delims=" %%L IN ("!%%K!") DO (
+							ENDLOCAL
+							IF NOT "%%L"=="ALREADY MERGED" (
+								ECHO:%%K,%%L
+								SET "%%K=ALREADY MERGED"
+							)
+						)
+					) ELSE (
+						ECHO:%%J
+					)
+				) ELSE (
+					ECHO:%%J
+				)
+			)
+		)
+	)
+)>updatertempfile
+MOVE /Y updatertempfile "%~1" >nul
+ENDLOCAL
+GOTO :EOF
+REM ############### Help ##################
+:showhelp
+MODE 80,43
+CLS
+CALL :message "Available arguments (case-insensitive):"
+CALL :message "  -log"
+ECHO:     Write the console output to a logfile (user.js-update-log.txt)
+CALL :message "  -logP"
+ECHO:     Like -log, but also open the logfile after updating.
+CALL :message "  -merge"
+ECHO:     Merge overrides instead of appending them. One-line comments and
+ECHO:     _user.js.parrot lines are appended normally. Overrides for inactive
+ECHO:     user.js prefs will be appended. When -Merge and -MultiOverrides are used
+ECHO:     together, a user-overrides-merged.js file is also generated in the root
+ECHO:     directory for quick reference. It contains only the merged data from
+ECHO:     override files and can be safely discarded after updating, or used as the
+ECHO:     new user-overrides.js. When there are conflicting records for the same
+ECHO:     pref, the value of the last one declared will be used. Visit the wiki
+ECHO:     for usage examples and more detailed information.
+CALL :message "  -multiOverrides"
+ECHO:     Use any and all .js files in a user.js-overrides sub-folder as overrides
+ECHO:     instead of the default user-overrides.js file. Files are appended in
+ECHO:     alphabetical order.
+CALL :message "  -unattended"
+ECHO:     Run without user input.
+CALL :message "  -updatebatch"
+ECHO:     Update the script itself on execution, before the normal routine.
+CALL :message ""
+PAUSE
+CLS
+MODE 80,25
+GOTO :begin
+REM #####################################
--- a/updater.sh
+++ b/updater.sh
@ -0,0 +1,58 @@
+#!/bin/bash
+
+### ghacks-user.js updater for Mac/Linux
+## author: @overdodactyl
+## version: 1.2
+
+ghacksjs="https://raw.githubusercontent.com/ghacksuserjs/ghacks-user.js/master/user.js"
+
+echo -e "\nThis script should be run from your Firefox profile directory.\n"
+
+currdir=$(pwd)
+
+## get the full path of this script (readlink for Linux, greadlink for Mac with coreutils installed)
+sfp=$(readlink -f "${BASH_SOURCE[0]}" 2>/dev/null || greadlink -f "${BASH_SOURCE[0]}" 2>/dev/null)
+
+## fallback for Macs without coreutils
+if [ -z "$sfp" ]; then sfp=${BASH_SOURCE[0]}; fi
+
+## change directory to the Firefox profile directory
+cd "$(dirname "${sfp}")"
+
+echo -e "Updating the user.js for Firefox profile:\n$(pwd)\n"
+
+if [ -e user.js ]; then
+  echo "Your current user.js file for this profile will be backed up and the latest ghacks version from github will take its place."
+  echo -e "\nIf currently using the ghacks user.js, please compare versions:"
+  echo "  Available online: $(curl -s ${ghacksjs} | sed -n '4p')"
+  echo "  Currently using:  $(sed -n '4p' user.js)"
+else
+  echo "A user.js file does not exist in this profile. If you continue, the latest ghacks version from github will be downloaded."
+fi
+
+echo -e "\nIf a user-overrides.js file exists in this profile, it will be appended to the user.js.\n"
+
+read -p "Continue Y/N? " -n 1 -r
+echo -e "\n\n"
+
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+  if [ -e user.js ]; then
+    # backup current user.js
+    bakfile="user.js.backup.$(date +"%Y-%m-%d_%H%M")"
+    mv user.js "${bakfile}" && echo "Your previous user.js file was backed up: ${bakfile}"
+  fi
+
+  # download latest ghacks user.js
+  echo "downloading latest ghacks user.js file"
+  curl -O ${ghacksjs} && echo "ghacks user.js has been downloaded"
+
+  if [ -e user-overrides.js ]; then
+    echo "user-overrides.js file found"
+    cat user-overrides.js >> user.js && echo "user-overrides.js has been appended to user.js"
+  fi
+else
+  echo "Process aborted"
+fi
+
+## change directory back to the original working directory
+cd "${currdir}"
--- a/user.js
+++ b/user.js
@ -1,8 +1,8 @@
 /******
 * name: ghacks user.js
-* date: 2 October 2017
-* version 56: You're So Pants
-*   "You're so pants, you probably think this song is about you. Don't you? Don't You?"
+* date: 20 November 2017
+* version 57: I Love Rock 'n' Pants
+*   "Singing, I love rock and pants. So put another dime in the jukebox, baby"
 * authors: v52+ github | v51- www.ghacks.net
 * url: https://github.com/ghacksuserjs/ghacks-user.js

@ -21,7 +21,7 @@
     * Some user data is erased on close (section 2800), namely history (browsing, form, download)
     * Cookies are denied by default (2701), we use site exceptions. This breaks extensions
       that use IndexedDB, so you need to allow exceptions for those as well: see [1] below
-       [1] https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.7-Setting-Extension-Permission-Exceptions
+       [1] https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.1.1-Setting-Extension-Permission-Exceptions
     * EACH RELEASE check:
         - 4600s: reset prefs made redundant due to privacy.resistFingerprinting (RPF)
                  or enable them as an alternative to RFP or for ESR users
@ -34,7 +34,7 @@
           before using to avoid unexpected surprises
         - Search this file for the "[WARNING]" tag to troubleshoot or prevent SOME common issues
  4. BACKUP your profile folder before implementing (and/or test in a new/cloned profile)
-  5. KEEP UP TO DATE: https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.5-Keeping-Up-To-Date
+  5. KEEP UP TO DATE: https://github.com/ghacksuserjs/ghacks-user.js/wiki#small_orange_diamond-maintenance

 ******/

@ -73,9 +73,10 @@ user_pref("startup.homepage_override_url", ""); // what's new page after updates
 user_pref("browser.laterrun.enabled", false);
 user_pref("browser.shell.checkDefaultBrowser", false);
 /* 0102: set start page (0=blank, 1=home, 2=last visited page, 3=resume previous session)
- * home = browser.startup.homepage preference.
 * [SETTING] Options>General>Startup>When Firefox starts ***/
   // user_pref("browser.startup.page", 0);
+/* 0103: set your "home" page (see 0102) ***/
+   // user_pref("browser.startup.homepage", "https://www.example.com/");

 /*** 0200: GEOLOCATION ***/
 user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!");
@ -159,15 +160,20 @@ user_pref("extensions.webservice.discoverURL", "");
 * IF unified=false then .enabled controls the telemetry module
 * IF unified=true then .enabled ONLY controls whether to record extended data
 * so make sure to have both set as false
- * [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html ***/
+ * [NOTE] FF58+ `toolkit.telemetry.enabled` is now LOCKED to reflect prerelease
+ * or release builds (true and false respectively), see [2]
+ * [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html
+ * [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/
 user_pref("toolkit.telemetry.unified", false);
-user_pref("toolkit.telemetry.enabled", false);
+user_pref("toolkit.telemetry.enabled", false); // see [NOTE] above FF58+
 user_pref("toolkit.telemetry.server", "");
 user_pref("toolkit.telemetry.archive.enabled", false);
 user_pref("toolkit.telemetry.cachedClientID", "");
 user_pref("toolkit.telemetry.newProfilePing.enabled", false); // (FF55+)
 user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); // (FF55+)
 user_pref("toolkit.telemetry.updatePing.enabled", false); // (FF56+)
+user_pref("toolkit.telemetry.bhrPing.enabled", false); // (FF57+) Background Hang Reporter
+user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); // (FF57+)
 /* 0333a: disable health report ***/
 user_pref("datareporting.healthreport.uploadEnabled", false);
 /* 0333b: disable about:healthreport page (which connects to Mozilla for locale/css+js+json)
@ -194,15 +200,6 @@ user_pref("browser.newtabpage.introShown", true);
 * MUST use HTTPS - arbitrary content injected into this page via http opens up MiTM attacks
 * [1] https://wiki.mozilla.org/Firefox/Projects/Firefox_Start/Snippet_Service ***/
 user_pref("browser.aboutHomeSnippets.updateUrl", "https://127.0.0.1");
-/* 0374: disable "social" integration
- * [1] https://developer.mozilla.org/docs/Mozilla/Projects/Social_API ***/
-user_pref("social.whitelist", "");
-user_pref("social.toast-notifications.enabled", false);
-user_pref("social.shareDirectory", "");
-user_pref("social.remote-install.enabled", false);
-user_pref("social.directories", "");
-user_pref("social.share.activationPanelEnabled", false);
-user_pref("social.enabled", false); // (hidden pref)

 /*** 0400: BLOCKLISTS / SAFE BROWSING / TRACKING PROTECTION
     This section has security & tracking protection implications vs privacy concerns vs effectiveness
@ -337,6 +334,9 @@ user_pref("network.allow-experiments", false);
 /* 0505: block URL used for system extension updates (FF44+)
 * [NOTE] You will not get any system extension updates except when you update Firefox ***/
   // user_pref("extensions.systemAddon.update.url", "");
+/* 0506: disable PingCentre telemetry (used in several system extensions) (FF57+)
+ * Currently blocked by 'datareporting.healthreport.uploadEnabled' (see 0333) ***/
+user_pref("browser.ping-centre.telemetry", false);
 /* 0510: disable Pocket (FF39+)
 * Pocket is a third party (now owned by Mozilla) "save for later" cloud service
 * [1] https://en.wikipedia.org/wiki/Pocket_(application)
@ -363,6 +363,7 @@ user_pref("extensions.shield-recipe-client.api_url", "");
 * [1] https://wiki.mozilla.org/Firefox/Activity_Stream
 * [2] https://www.ghacks.net/2016/02/15/firefox-mockups-show-activity-stream-new-tab-page-and-share-updates/ ***/
 user_pref("browser.newtabpage.activity-stream.enabled", false);
+user_pref("browser.library.activity-stream.enabled", false); // (FF57+)
 /* 0515: disable Screenshots (FF55+)
 * [1] https://github.com/mozilla-services/screenshots
 * [2] https://www.ghacks.net/2017/05/28/firefox-screenshots-integrated-in-firefox-nightly/ ***/
@ -475,14 +476,14 @@ user_pref("browser.urlbar.usepreloadedtopurls.enabled", false);
 /* 0810: disable location bar making speculative connections (FF56+)
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1348275 ***/
 user_pref("browser.urlbar.speculativeConnect.enabled", false);
-/* 0850a: disable location bar autocomplete [controlled by 0850b] ***/
-   // user_pref("browser.urlbar.autocomplete.enabled", false);
-/* 0850b: disable location bar suggestion types [controls 0850a]
+/* 0850a: disable location bar autocomplete and suggestion types
+ * If you enforce any of the suggestion types, you MUST enforce 'autocomplete'
+ *   - If *ALL* of the suggestion types are false, 'autocomplete' must also be false
+ *   - If *ANY* of the suggestion types are true, 'autocomplete' must also be true
 * [SETTING-56+] Options>Privacy & Security>Address Bar>When using the address bar, suggest
 * [SETTING-ESR] Options>Privacy>Location Bar>When using the location bar, suggest
- * [NOTE] If any of these are true, 0850a will be FORCED to true
- * and if all three are false, 0850a will be FORCED to false
- * [WARNING] If all three are false, search engine keywords are disabled ***/
+ * [WARNING] If all three suggestion types are false, search engine keywords are disabled ***/
+user_pref("browser.urlbar.autocomplete.enabled", false);
 user_pref("browser.urlbar.suggest.history", false);
 user_pref("browser.urlbar.suggest.bookmark", false);
 user_pref("browser.urlbar.suggest.openpage", false);
@ -492,7 +493,7 @@ user_pref("browser.urlbar.suggest.openpage", false);
 * be displayed (no we do not know how these are calculated or what the threshold is),
 * and this does not affect the search by search engine suggestion (see 0808)
 * [USAGE] This setting is only useful if you want to enable search engine keywords
- * (i.e. at least one of 0850b must be true) but you want to *limit* suggestions shown ***/
+ * (i.e. at least one of 0850a suggestion types must be true) but you want to *limit* suggestions shown ***/
   // user_pref("browser.urlbar.maxRichResults", 0);
 /* 0850d: disable location bar autofill
 * [1] http://kb.mozillazine.org/Inline_autocomplete ***/
@ -501,6 +502,9 @@ user_pref("browser.urlbar.autoFill.typed", false);
 /* 0850e: disable location bar one-off searches (FF51+)
 * [1] https://www.ghacks.net/2016/08/09/firefox-one-off-searches-address-bar/ ***/
 user_pref("browser.urlbar.oneOffSearches", false);
+/* 0850f: disable location bar suggesting local search history (FF57+)
+ * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1181644 ***/
+user_pref("browser.urlbar.maxHistoricalSearchSuggestions", 0); // max. number of search suggestions
 /* 0860: disable search and form history
 * [SETTING-56+] Options>Privacy & Security>History>Custom Settings>Remember search and form history
 * [SETTING-ESR] Options>Privacy>History>Custom Settings>Remember search and form history
@ -580,8 +584,6 @@ user_pref("browser.cache.disk_cache_ssl", false);
 * [NOTE] Not recommended due to performance issues ***/
   // user_pref("browser.cache.memory.enable", false);
   // user_pref("browser.cache.memory.capacity", 0); // (hidden pref)
-/* 1004: disable offline cache ***/
-user_pref("browser.cache.offline.enable", false);
 /* 1005: disable fastback cache
 * To improve performance when pressing back/forward Firefox stores visited pages
 * so they don't have to be re-parsed. This is not the same as memory cache.
@ -671,7 +673,7 @@ user_pref("dom.ipc.shims.enabledWarnings", true);
 user_pref("browser.tabs.remote.allowLinkedWebInFileUriProcess", false);
 /* 1110: set sandbox level. DO NOT MEDDLE WITH THESE. They are included to inform you NOT to play
 * with them. The values are integers, but the code below deliberately contains a data mismatch
- * [1] https://wiki.mozilla.org/Sandbox
+ * [1] https://wiki.mozilla.org/Security/Sandbox
 * [2] https://www.ghacks.net/2017/01/23/how-to-change-firefoxs-sandbox-security-level/#comment-4105173 ***/
   // user_pref("security.sandbox.content.level", "donotuse");
   // user_pref("dom.ipc.plugins.sandbox-level.default", "donotuse");
@ -824,6 +826,9 @@ user_pref("browser.ssl_override_behavior", 1);
 * i.e. it doesn't work for HSTS discrepancies (https://subdomain.preloaded-hsts.badssl.com/)
 * [TEST] https://expired.badssl.com/ ***/
 user_pref("browser.xul.error_pages.expert_bad_cert", true);
+/* 1273: display HTTP sites as insecure (FF59+) ***/
+user_pref("security.insecure_connection_icon.enabled", true); // all windows
+   // user_pref("security.insecure_connection_icon.pbmode.enabled", true); // private windows only

 /*** 1400: FONTS ***/
 user_pref("_user.js.parrot", "1400 syntax error: the parrot's bereft of life!");
@ -984,10 +989,10 @@ user_pref("media.gmp-manager.updateEnabled", false); // disable local fallback (
 user_pref("media.gmp-widevinecdm.visible", false);
 user_pref("media.gmp-widevinecdm.enabled", false);
 user_pref("media.gmp-widevinecdm.autoupdate", false);
-/* 1830: disable all DRM content (EME: Encryption Media Extension) [SETUP] ***/
+/* 1830: disable all DRM content (EME: Encryption Media Extension) [SETUP]
+ * [1] https://www.eff.org/deeplinks/2017/10/drms-dead-canary-how-we-just-lost-web-what-we-learned-it-and-what-we-need-do-next ***/
 user_pref("media.eme.enabled", false); // Options>Content>Play DRM Content
 user_pref("browser.eme.ui.enabled", false); // hides "Play DRM Content" checkbox, restart required
-user_pref("media.eme.chromium-api.enabled", false); // (FF55+)
 /* 1840: disable the OpenH264 Video Codec by Cisco to "Never Activate"
 * This is the bundled codec used for video chat in WebRTC ***/
 user_pref("media.gmp-gmpopenh264.enabled", false); // (hidden pref)
@ -1086,9 +1091,8 @@ user_pref("dom.disable_beforeunload", true);
 /*** 2300: WEB WORKERS [SETUP]
     A worker is a JS "background task" running in a global context, i.e. it is different from
     the current window. Workers can spawn new workers (must be the same origin & scheme),
-     including service and shared workers. Shared workers can be utilized by multiple scripts
-     and communicate between browsing contexts (windows/tabs/iframes) and can even control your
-     cache. Push and web notifications require service workers, which in turn require workers.
+     including service and shared workers. Shared workers can be utilized by multiple scripts and
+     communicate between browsing contexts (windows/tabs/iframes) and can even control your cache.

     [WARNING] Disabling workers *will* break sites (e.g. Google Street View, Twitter).
     It is recommended that you use a separate profile for these sorts of sites.
@ -1111,8 +1115,6 @@ user_pref("dom.workers.enabled", false);
 * [NOTE] Service worker APIs are hidden (in Firefox) and cannot be used when in PB mode.
 * [NOTE] Service workers only run over HTTPS. Service Workers have no DOM access. ***/
 user_pref("dom.serviceWorkers.enabled", false);
-/* 2303: disable service workers' cache and cache storage ***/
-user_pref("dom.caches.enabled", false);
 /* 2304: disable web notifications
 * [NOTE] You can still override individual domains under site permissions (FF44+)
 * [1] https://developer.mozilla.org/docs/Web/API/Notifications_API ***/
@ -1139,11 +1141,6 @@ user_pref("dom.event.clipboardevents.enabled", false);
 * this disables document.execCommand("cut"/"copy") to protect your clipboard
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1170911 ***/
 user_pref("dom.allow_cut_copy", false); // (hidden pref)
-/* 2404: disable JS storing data permanently [SETUP]
- * [WARNING] This BREAKS uBlock Origin [1.14.0+] and uMatrix extensions
- * [1] https://github.com/gorhill/uBlock/releases/tag/1.14.0 
- * [WARNING] This *will* break other extensions including legacy, and *will* break some sites ***/
-   // user_pref("dom.indexedDB.enabled", false);
 /* 2414: disable shaking the screen ***/
 user_pref("dom.vibrator.enabled", false);
 /* 2415: set max popups from a single non-click event - default is 20! ***/
@ -1178,18 +1175,6 @@ user_pref("javascript.options.wasm", false);
 * [2] https://w3c.github.io/IntersectionObserver/
 * [3] https://bugzilla.mozilla.org/show_bug.cgi?id=1243846 ***/
 user_pref("dom.IntersectionObserver.enabled", false);
-/* 2450a: enforce websites to ask to store data for offline use
- * [1] https://support.mozilla.org/questions/1098540
- * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=959985 ***/
-user_pref("offline-apps.allow_by_default", false);
-/* 2450b: display a notification when websites ask to store data for offline use
- * [SETTING-56+] Options>Privacy & Security>Offline Web Content and User Data>Tell you when a website asks...
- * [SETTING-ESR] Options>Advanced>Network>Tell me when a website asks to store data for offline use ***/
-user_pref("browser.offline-apps.notify", true);
-/* 2450c: set size of warning quota for offline cache (default 51200)
- * Offline cache is only used in rare cases to store data locally. FF will store small amounts
- * (default <50MB) of data in the offline (application) cache without asking for permission. ***/
-   // user_pref("offline-apps.quota.warn", 51200);

 /*** 2500: HARDWARE FINGERPRINTING ***/
 user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is mortal coil!");
@ -1202,23 +1187,13 @@ user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is m
 * [1] https://wiki.mozilla.org/Media/getUserMedia
 * [2] https://developer.mozilla.org/docs/Web/API/MediaDevices/enumerateDevices ***/
 user_pref("media.navigator.enabled", false);
-/* 2506: disable video statistics - JS performance fingerprinting (FF25+)
- * [1] https://trac.torproject.org/projects/tor/ticket/15757
- * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=654550 ***/
-user_pref("media.video_stats.enabled", false);
 /* 2508: disable hardware acceleration to reduce graphics fingerprinting
 * [SETTING] Options>General>Performance>Custom>Use hardware acceleration when available
- * [WARNING] [SETUP] Affects text rendering (fonts will look different) and impacts video performance
+ * [WARNING] [SETUP] Affects text rendering (fonts will look different), impacts video performance,
+ * and parts of Quantum that utilize the GPU will also be affected as they are rolled out
 * [1] https://wiki.mozilla.org/Platform/GFX/HardwareAcceleration ***/
   // user_pref("gfx.direct2d.disabled", true); // [WINDOWS]
 user_pref("layers.acceleration.disabled", true);
-/* 2509: disable touch events
- * fingerprinting attack vector - leaks screen res & actual screen coordinates
- * 0=disabled, 1=enabled, 2=autodetect
- * [WARNING] [SETUP] Optional protection depending on your device
- * [1] https://developer.mozilla.org/docs/Web/API/Touch_events
- * [2] https://trac.torproject.org/projects/tor/ticket/10286 ***/
-   // user_pref("dom.w3c_touch_events.enabled", 0);
 /* 2510: disable Web Audio API (FF51+)
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1288359 ***/
 user_pref("dom.webaudio.enabled", false);
@ -1264,16 +1239,14 @@ user_pref("network.jar.open-unsafe-types", false);
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=232227
 * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1330876 ***/
 user_pref("ui.use_standins_for_native_colors", true); // (hidden pref)
+/* 2610: remove special permissions for certain mozilla domains (FF35+)
+ * [1] resource://app/defaults/permissions ***/
+user_pref("permissions.manager.defaultsUrl", "");
 /* 2611: disable WebIDE to prevent remote debugging and extension downloads
 * [1] https://trac.torproject.org/projects/tor/ticket/16222 ***/
 user_pref("devtools.webide.autoinstallADBHelper", false);
-user_pref("devtools.webide.autoinstallFxdtAdapters", false);
 user_pref("devtools.debugger.remote-enabled", false);
 user_pref("devtools.webide.enabled", false);
-/* 2612: disable SimpleServiceDiscovery - which can bypass proxy settings - e.g. Roku
- * [1] https://trac.torproject.org/projects/tor/ticket/16222 ***/
-user_pref("browser.casting.enabled", false);
-user_pref("gfx.layerscope.enabled", false);
 /* 2614: disable HTTP2 (which was based on SPDY which is now deprecated)
 * HTTP2 raises concerns with "multiplexing" and "server push", does nothing to enhance
 * privacy, and in fact opens up a number of server-side fingerprinting opportunities
@ -1348,6 +1321,10 @@ user_pref("browser.uitour.url", "");
 /* 2629: disable remote JAR files being opened, regardless of content type (FF42+)
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1173171 ***/
 user_pref("network.jar.block-remote-files", true);
+/* 2630: prevent accessibility services from accessing your browser
+ * [SETTING] Options>Privacy & Security>Permissions>Prevent accessibility services from accessing your browser
+ * [1] https://support.mozilla.org/kb/accessibility-services ***/
+user_pref("accessibility.force_disabled", 1);
 /* 2662: disable "open with" in download dialog (FF50+)
 * This is very useful to enable when the browser is sandboxed (e.g. via AppArmor)
 * in such a way that it is forbidden to run external applications.
@ -1413,7 +1390,14 @@ user_pref("security.csp.experimentalEnabled", true);
 * [3] https://www.fxsitecompat.com/en-CA/docs/2017/data-url-navigations-on-top-level-window-will-be-blocked/ ***/
 user_pref("security.data_uri.block_toplevel_data_uri_navigations", true);

-/*** 2700: COOKIES & DOM STORAGE ***/
+/*** 2700: PERSISTENT STORAGE
+     Data SET by websites including
+            cookies : profile\cookies.sqlite
+       localStorage : profile\webappsstore.sqlite
+          indexedDB : profile\storage\default
+           appCache : profile\OfflineCache
+     serviceWorkers :
+***/
 user_pref("_user.js.parrot", "2700 syntax error: the parrot's joined the bleedin' choir invisible!");
 /* 2701: disable cookies on all sites [SETUP]
 * You can set exceptions under site permissions or use an extension
@ -1434,28 +1418,52 @@ user_pref("network.cookie.thirdparty.sessionOnly", true);
   // user_pref("network.cookie.lifetimePolicy", 0);
 /* 2704: set cookie lifetime in days (see above pref) - default is 90 days ***/
   // user_pref("network.cookie.lifetime.days", 90);
-/* 2705: disable DOM (Document Object Model) Storage
+/* 2705: disable HTTP sites setting cookies with the "secure" directive (default: true) (FF52+)
+ * [1] https://developer.mozilla.org/Firefox/Releases/52#HTTP ***/
+user_pref("network.cookie.leave-secure-alone", true);
+/* 2710: disable DOM (Document Object Model) Storage
 * [WARNING] This will break a LOT of sites' functionality.
 * You are better off using an extension for more granular control ***/
   // user_pref("dom.storage.enabled", false);
-/* 2706: disable Storage API
- * The API gives sites the ability to find out how much space they can use, how much
- * they are already using, and even control whether or not they need to be alerted
- * before the user agent disposes of site data in order to make room for other things.
- * [1] https://developer.mozilla.org/docs/Web/API/StorageManager
- * [2] https://developer.mozilla.org/docs/Web/API/Storage_API
- * [3] https://blog.mozilla.org/l10n/2017/03/07/firefox-l10n-report-aurora-54/ ***/
-user_pref("dom.storageManager.enabled", false); // (FF51+)
-user_pref("browser.storageManager.enabled", false); // (FF53+)
-/* 2707: clear localStorage and UUID when an extension is uninstalled
+/* 2711: clear localStorage and UUID when an extension is uninstalled
 * [NOTE] Both preferences must be the same
 * [1] https://developer.mozilla.org/Add-ons/WebExtensions/API/storage/local
 * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1213990 ***/
 user_pref("extensions.webextensions.keepStorageOnUninstall", false);
 user_pref("extensions.webextensions.keepUuidOnUninstall", false);
-/* 2708: disable HTTP sites setting cookies with the "secure" directive (default: true) (FF52+)
- * [1] https://developer.mozilla.org/Firefox/Releases/52#HTTP ***/
-user_pref("network.cookie.leave-secure-alone", true);
+/* 2720: disable JS storing data permanently [SETUP]
+ * [WARNING] This BREAKS uBlock Origin [1.14.0+] and other extensions that require IndexedDB
+ * [1] https://github.com/gorhill/uBlock/releases/tag/1.14.0 
+ * [WARNING] This *will* break other extensions including legacy, and *will* break some sites ***/
+   // user_pref("dom.indexedDB.enabled", false);
+/* 2730: disable offline cache ***/
+user_pref("browser.cache.offline.enable", false);
+/* 2731: enforce websites to ask to store data for offline use
+ * [1] https://support.mozilla.org/questions/1098540
+ * [2] https://bugzilla.mozilla.org/show_bug.cgi?id=959985 ***/
+user_pref("offline-apps.allow_by_default", false);
+/* 2732: display a notification when websites ask to store data for offline use
+ * [SETTING-56+] Options>Privacy & Security>Offline Web Content and User Data>Tell you when a website asks...
+ * [SETTING-ESR] Options>Advanced>Network>Tell me when a website asks to store data for offline use ***/
+user_pref("browser.offline-apps.notify", true);
+/* 2733: set size of warning quota for offline cache (default 51200)
+ * Offline cache is only used in rare cases to store data locally. FF will store small amounts
+ * (default <50MB) of data in the offline (application) cache without asking for permission. ***/
+   // user_pref("offline-apps.quota.warn", 51200);
+/* 2740: disable service workers cache and cache storage
+ * [1] https://w3c.github.io/ServiceWorker/#privacy ***/
+user_pref("dom.caches.enabled", false);
+/* 2750: disable Storage API
+ * The API gives sites the ability to find out how much space they can use, how much
+ * they are already using, and even control whether or not they need to be alerted
+ * before the user agent disposes of site data in order to make room for other things.
+ * [NOTE] This also controls the visibility of the "Options>Privacy & Security>Site Data"
+ * section, which also requires Offline Cache (2730) enabled to function
+ * [1] https://developer.mozilla.org/docs/Web/API/StorageManager
+ * [2] https://developer.mozilla.org/docs/Web/API/Storage_API
+ * [3] https://blog.mozilla.org/l10n/2017/03/07/firefox-l10n-report-aurora-54/ ***/
+user_pref("dom.storageManager.enabled", false); // (FF51+)
+user_pref("browser.storageManager.enabled", false); // (FF53+)

 /*** 2800: SHUTDOWN [SETUP]
     You should set the values to what suits you best. Be aware that the settings below clear
@ -1522,6 +1530,11 @@ user_pref("privacy.sanitize.timeSpan", 0);
 ** 1337893 - isolate DNS cache (FF55+)
 ** 1344170 - isolate blob: URI (FF55+)
 ** 1300671 - isolate data:, about: URLs (FF55+)
+
+ NOTE: FPI has some unresolved issues
+ ** 1381197 - extensions cannot control cookies with FPI Origin Attributes
+ ** 1418931 - IndexedDB (Offline Website Data) with FPI Origin Attributes
+      are not removed with "Clear All/Recent History" or "On Close"
 ***/
 user_pref("_user.js.parrot", "4000 syntax error: the parrot's pegged out");
 /* 4001: enable First Party Isolation (FF51+)
@ -1565,14 +1578,17 @@ user_pref("privacy.firstparty.isolate.restrict_opener_access", true);
 ** 1372072 - spoof network information API as "unknown" (see 4607) (FF56+)
 ** 1333641 - reduce fingerprinting in WebSpeech API (see 4608) (FF56+)
 ** 1372069 & 1403813 - block geolocation requests (same as if you deny a site permission) (see 4609) (FF56+)
- ** 1369309 - spoof media statistics (see 2506) (FF57+)
- ** 1382499 - reduce screen co-ordinate fingerprinting in Touch API (see 2509) (FF57+)
+ ** 1369309 - spoof media statistics (see 4610) (FF57+)
+ ** 1382499 - reduce screen co-ordinate fingerprinting in Touch API (see 4611) (FF57+)
 ** 1217290 - enable fingerprinting resistance for WebGL (see 2010-12) (FF57+)
 ** 1382545 - reduce fingerprinting in Animation API (FF57+)
 ** 1354633 - limit MediaError.message to a whitelist (FF57+)
 ** 1382533 - enable fingerprinting resistance for Presentation API (see 2513) (FF57+)
      This blocks exposure of local IP Addresses via mDNS (Multicast DNS)
 **  967895 - enable site permission prompt before allowing canvas data extraction (FF58+)
+      In FF59+ this is controllable via the site permissions panel, see 1413780 (FF59+)
+ ** 1372073 - spoof/block fingerprinting in MediaDevices API (FF59+)
+ ** 1039069 - warn when language prefs are set to non en-US (see 0207, 0208) (FF59+)
 ***/
 user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
 /* 4501: enable privacy.resistFingerprinting (FF41+)
@ -1634,7 +1650,7 @@ user_pref("browser.zoom.siteSpecific", false);
   // [2] https://wicg.github.io/netinfo/
   // [3] https://bugzilla.mozilla.org/show_bug.cgi?id=960426
 user_pref("dom.netinfo.enabled", false);
-// 4608: [2012] disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API
+// 4608: [2021] disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API
   // [1] https://developer.mozilla.org/docs/Web/API/Web_Speech_API
   // [2] https://developer.mozilla.org/docs/Web/API/SpeechSynthesis
   // [3] https://wiki.mozilla.org/HTML5_Speech_API
@ -1643,6 +1659,19 @@ user_pref("media.webspeech.synth.enabled", false);
   // [1] https://www.mozilla.org/firefox/geolocation/
 user_pref("geo.enabled", false);
 // * * * /
+// FF57+
+// 4610: [2506] disable video statistics - JS performance fingerprinting (FF25+)
+   // [1] https://trac.torproject.org/projects/tor/ticket/15757
+   // [2] https://bugzilla.mozilla.org/show_bug.cgi?id=654550
+user_pref("media.video_stats.enabled", false);
+// 4611: [2509] disable touch events
+   // fingerprinting attack vector - leaks screen res & actual screen coordinates
+   // 0=disabled, 1=enabled, 2=autodetect
+   // [WARNING] [SETUP] Optional protection depending on your device
+   // [1] https://developer.mozilla.org/docs/Web/API/Touch_events
+   // [2] https://trac.torproject.org/projects/tor/ticket/10286
+   // user_pref("dom.w3c_touch_events.enabled", 0);
+// * * * /
 // ***/

 /*** 4700: RFP (4500) ALTERNATIVES - NAVIGATOR / USER AGENT (UA) SPOOFING
@ -1656,7 +1685,7 @@ user_pref("geo.enabled", false);
       2. You are not in a controlled set of significant numbers, where the values are enforced
          by default. It works for TBB because for TBB, the spoofed values ARE their default.
     * We do not recommend UA spoofing yourself, leave it to privacy.resistFingerprinting (see 4500)
-       which is already plugging leaks (see 2 above) the prefs below do not address
+       which is already plugging leaks (see 1 above) the prefs below do not address
     * Values below are for example only based on the current TBB at the time of writing
 ***/
 user_pref("_user.js.parrot", "4700 syntax error: the parrot's taken 'is last bow");
@ -1704,6 +1733,9 @@ user_pref("browser.backspace_action", 2);
 * 1=current window, 2=new window, 3=most recent window
 * [SETTING] Options>General>Tabs>Open new windows in a new tab instead ***/
 user_pref("browser.link.open_newwindow", 3);
+/* 5008: open bookmarks in a new tab (FF57+)
+ * [NOTE] You can also use middle-click, cmd/ctl-click, and use the context menu ***/
+   // user_pref("browser.tabs.loadBookmarksInTabs", true);
 /* 5010: enable ctrl-tab previews ***/
 user_pref("browser.ctrlTab.previews", true);
 /* 5011: don't open "page/selection source" in a tab. The window used instead is cleaner
@ -1715,6 +1747,10 @@ user_pref("layout.spellcheckDefault", 1);
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=620472
 * [2] https://developer.mozilla.org/docs/Online_and_offline_events ***/
 user_pref("network.manage-offline-status", false);
+/* 5014: control download button visibility (FF57+)
+ * true = the button is automatically shown/hidden based on whether the session has downloads or not
+ * false = the button is always visible ***/
+   // user_pref("browser.download.autohideButton", false);
 /* 5015: disable animations (FF55+)
 * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1352069 ***/
   // user_pref("toolkit.cosmeticAnimations.enabled", false);
@ -1743,8 +1779,6 @@ user_pref("browser.tabs.loadInBackground", true);
 * true: load the new tab in the background, leaving focus on the current tab
 * false: load the new tab in the foreground, taking the focus from the current tab. ***/
 user_pref("browser.tabs.loadDivertedInBackground", false);
-/* 5022: hide recently bookmarked items (you still have the original bookmarks) (FF49+) ***/
-user_pref("browser.bookmarks.showRecentlyBookmarked", false);
 /* 5023: enable "Find As You Type"
 * [1] http://kb.mozillazine.org/Accessibility.typeaheadfind ***/
   // user_pref("accessibility.typeaheadfind", true);
@ -1764,6 +1798,7 @@ user_pref("browser.bookmarks.showRecentlyBookmarked", false);
   // user_pref("media.wave.enabled", false);
   // user_pref("media.webm.enabled", false);
   // user_pref("media.wmf.enabled", false); // https://www.youtube.com/html5 - for the two H.264 entries
+   // user_pref("media.wmf.amd.vp9.enabled", true); // (FF57+)
   // user_pref("media.wmf.vp9.enabled", false);
 /* 5026: disable "Reader View" ***/
   // user_pref("reader.parse-on-load.enabled", false);
@ -2069,6 +2104,33 @@ user_pref("browser.fullscreen.animate", false);
   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1385201
 user_pref("extensions.formautofill.experimental", false);
 // * * * /
+// FF57
+// 0374: disable "social" integration
+   // [1] https://developer.mozilla.org/docs/Mozilla/Projects/Social_API
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1388902
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1406193 (leftover prefs removed in FF58)
+user_pref("social.whitelist", "");
+user_pref("social.toast-notifications.enabled", false);
+user_pref("social.shareDirectory", "");
+user_pref("social.remote-install.enabled", false);
+user_pref("social.directories", "");
+user_pref("social.share.activationPanelEnabled", false);
+user_pref("social.enabled", false); // (hidden pref)
+// 1830: disable DRM's EME WideVineAdapter
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1395468
+user_pref("media.eme.chromium-api.enabled", false); // (FF55+)
+// 2611: disable WebIDE extension downloads (Valence)
+   // [1] https://trac.torproject.org/projects/tor/ticket/16222
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1393497
+user_pref("devtools.webide.autoinstallFxdtAdapters", false);
+// 2612: disable SimpleServiceDiscovery - which can bypass proxy settings - e.g. Roku
+   // [1] https://trac.torproject.org/projects/tor/ticket/16222
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1393582
+user_pref("browser.casting.enabled", false);
+// 5022: hide recently bookmarked items (you still have the original bookmarks) (FF49+)
+   // [-] https://bugzilla.mozilla.org/show_bug.cgi?id=1401238
+user_pref("browser.bookmarks.showRecentlyBookmarked", false);
+// * * * /
 // ***/

 /* END: internal custom pref to test for syntax errors ***/