Stylish Reinício necessário

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Avaliado em 4 de 5 estrelas (877)
20 751 descargas semanais

JavaScript on-off applet Reinício necessário

Applet for JavaScript simple On/Off

Avaliado em 4 de 5 estrelas (7)
15 566 descargas semanais

Easy Access Reinício necessário

Allow an easy access to the system commands and other programs in your computer.

Avaliado em 4 de 5 estrelas (19)
15 558 descargas semanais

Tab Mix Plus Reinício necessário

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Avaliado em 4 de 5 estrelas (2 646)
14 322 descargas semanais

Dark YouTube Theme Em destaque

Shut down the lights on YouTube.

Avaliado em 4 de 5 estrelas (78)
12 879 descargas semanais

Classic Theme Restorer Reinício necessário

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29-56 (Windows / MacOSX / Linux).

Release builds
Beta builds

Avaliado em 5 de 5 estrelas (1 188)
10 891 descargas semanais

FireGestures Reinício necessário Em destaque

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

Avaliado em 4 de 5 estrelas (986)
8 121 descargas semanais

adaware ad block

By blocking annoying ads and nosy trackers, adaware ad block nearly doubles your browsing speed! And with the most robust antivirus-level cloud-scanning technology of any ad blocker on the market, you’ll be safe from the latest cyber-threats.

Avaliado em 4 de 5 estrelas (33)
7 813 descargas semanais

Reddit Enhancement Suite

NOTE: Reddit Enhancement Suite is developed independently, and is not officially endorsed by or affiliated with reddit.

RES is a suite of tools to enhance your reddit browsing experience.

Avaliado em 5 de 5 estrelas (118)
7 715 descargas semanais

Personas Plus

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.

Avaliado em 3 de 5 estrelas (919)
7 043 descargas semanais

Theme Font & Size Changer Em destaque

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.

Avaliado em 5 de 5 estrelas (181)
6 809 descargas semanais

Turn Off the Lights Em destaque

A página irá escurecer para que veja o vídeo como se estivesse no cinema.

Avaliado em 5 de 5 estrelas (289)
6 336 descargas semanais

Autoplay No More

Disable "play next video" feature on Youtube, TED and Vimeo.

Avaliado em 4 de 5 estrelas (16)
6 250 descargas semanais

Dark Background and Light Text

Makes every page (or only pages that you want) to have light text on dark background. Exact colors are customizable.

Avaliado em 5 de 5 estrelas (153)
5 277 descargas semanais


A very simple extension for learning web page colors. Copy the RGB or Hex color code of any pixel displayed in your browser to the clipboard (in CSS/HTML format). Similar in function to Internet Explorer's color picker.

Avaliado em 5 de 5 estrelas (48)
4 719 descargas semanais

Just Disable Stuff

Just disable JavaScript - toggle it on and off. No fancy toolbars, icons, windows, unnecessary functions. Just do it. You can also disable images. Just like that.

Avaliado em 4 de 5 estrelas (22)
4 588 descargas semanais

Print Edit Reinício necessário Em destaque

Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.

Avaliado em 5 de 5 estrelas (327)
4 492 descargas semanais

Flash Control

Controls as and when to display the Flash player and the HTML5 player.

Avaliado em 4 de 5 estrelas (77)
4 466 descargas semanais

MeasureIt Reinício necessário

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Avaliado em 4 de 5 estrelas (360)
4 227 descargas semanais

All-in-One Sidebar Reinício necessário

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Avaliado em 5 de 5 estrelas (1 564)
3 919 descargas semanais