This add-on is super helpful when google books preview page cannot be displayed! Work like a charm!

Firefox suddenly started throwing errors on an anime website i stream from. This addon fixed it and allows the videos to play.

Fixes a problem that makes browsing a pain like Reddit Chat. Only thing better would be a way to enter specific sites you want it to work on for better security. Thanks for this extension.

Essential to use recaptcha in pyLoad

I discovered this plugin as a helper for the Infy Scroll extension. Infy Scroll is useful but a little tricky to configure if you want to force Infinite Scrolling on certain sites; a simpler alternative though slightly less powerful is the UserScript Pagetual.

Works for me and nothing bad in the source code, basically removes "content-security-policy" and "x-frame-options" from headers. Thanks!

Works for me.

This extension's functionality definitely IS A MUST for browser core!!!
how that could happen they still haven't implemented it..?