automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
20 072 uživatelů
Stylebot
Change the appearance of the web instantly
11 708 uživatelů
Check4Change
Check4Change (aka C4C) is a simple extension that allows you to select a part of a web-page, and get notified when it changes.
5 552 uživatelů
Change Case
Let you UPPERCASE, lowercase or tOGGLE any selection of text in an input or textarea field by choosing a Change Case item in your context menu.
1 439 uživatelů
Simple Tab Groups
Create, modify, and quickly change tab groups
92 521 uživatelů
Change Timezone (Time Shift)
Easily change your timezone to a desired value and protect your privacy.
1 894 uživatelů
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
155 941 uživatelů
Change Geolocation (Location Guard)
Easily change your geographic location (Geolocation) to your desired one and protect your privacy.
4 071 uživatelů
Change Twitter Logo Back
Change Back to Twitter Logo
769 uživatelů
Font Changer
Font Changer allows you change the font of any website with your preferred Google Web Front quickly and easily. Just clicking the extension icon for the options.
1 562 uživatelů
Theme Font & Size Changer
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
7 031 uživatelů
Color Changer
Change a page's text, background, and link colors to your liking.
789 uživatelů
Color Temperature (Change Lux)
An easy to use screen color temperature addon!
630 uživatelů
Speed-Pitch changer
(EN) Modify the speed with the pitch of a video or audio. (FR) Modifiez la vitesse avec la tonalité d'une vidéo ou d'un audio.
3 588 uživatelů
Google Search - Geolocation & Language Change
You can easily change your location and language in the Google search results screen.
341 uživatelů
UI Changer for Reddit
Redirect to your preferred user interface.
2 035 uživatelů
Armoury Exchange
Visit the Armoury Exchange online! View the items for sale to your characters in the Armoury Exchange without needing to boot the game and sit through all the loading screens. Visit https://accounts.atoma.cloud to view your store.
2 769 uživatelů
Startup Theme Changer
Automatically changes the active theme each time the browser starts.
309 uživatelů
uBlock Origin
Konečně efektivní blokovač, který nezatěžuje CPU a paměť.
7 791 991 uživatelů
Change Twitter icons + Favicon
grhkm's plugin to change Twitter favicon + all appearing logos :)
46 uživatelů
FontARA Font Changer ( for all sites )
Features: ✔ Ability to choose between 10 free Persian fonts; ✔ Use Custom Fonts (Upload any font file and use it); ✔ Built-in support for popular social media and most famous sites ✔ It is completely Open Source; ✔ It is Free of Charge;
1 160 uživatelů
4chan X
Cross-browser userscript for maximum lurking on 4chan.
4 499 uživatelů
12 725 uživatelů
Change Timezone 88
Quickly adjust your timezone to the desired setting and safeguard your privacy with ease.
23 uživatelů
Moesif Origin & CORS Changer
The most popular and feature rich CORS tool on Chrome (over 100K weekly active users) is rebuilt for Firefox with more features. This plugin allows you to send cross-domain requests. You can also override Request Origin and CORS headers.
909 uživatelů