diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index a32bc0a..7324559 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -46,6 +46,8 @@ These extensions will not mask or alter any data sent or received, but may be us
 * [uBO-Scope](https://addons.mozilla.org/firefox/addon/ubo-scope/) | [GitHub](https://github.com/gorhill/uBO-Scope)
 * [True Sight](https://addons.mozilla.org/firefox/addon/detect-cloudflare-plus/) ✔ <sup>[Privacy](https://addons.mozilla.org/firefox/addon/detect-cloudflare-plus/privacy/)</sup> | [GitHub](https://github.com/claustromaniac/detect-cloudflare-plus)
    * Why would you want to detect ~~Cloudflare~~ CDNs? Read [this](https://github.com/claustromaniac/detect-cloudflare-PA/blob/master/README.md#motivation).
+* [mozlz4-edit](https://addons.mozilla.org/firefox/addon/mozlz4-edit/) | [Github](https://github.com/serj-kzv/mozlz4-edit)
+   * inspect and/or edit `*.lz4`, `*.mozlz4`, `*.jsonlz4`, `*.baklz4` and `*.json` files within FF
 * [Compare-UserJS](https://github.com/claustromaniac/Compare-UserJS)
    * Not an extension, but an excellent tool to compare user.js files and output the diffs in detailed breakdown - by our very own incomparable [claustromaniac](https://github.com/claustromaniac) :cat2: