CanvasBlocker
Alters some JS APIs to prevent fingerprinting.
27,336 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
27,224 users
Custom Scrollbars
Give Firefox a personal touch with customized scrollbars!
25,269 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
22,908 users
Zoom Page WE
Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom and minimum font size. Fit-to-width zooming can be applied to pages automatically. Fit-to-window scaling can be applied to small images.
22,167 users
FoxyTab
Collection of Tab Related Actions e.g. Duplicate, Close Duplicates, Close to the Left, Copy Title, Merge Windows, Save as PDF, Copy Urls Tab/All/Left/Right, Host keep/close/close other, Sort by URL/Title, Asce/Desc, Move, Reload, Reload Timer
21,683 users
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
21,361 users
PocketTube: Youtube Subscription Manager
The best way to group your subscriptions Using this simple extension you can create collections that seamlessly fit into YouTube's layout.
20,411 users
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
19,887 users
Snap Links Plus
Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.
18,435 users
Forecastfox (fix version)
Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.
17,786 users
Link Gopher
Extracts all links from web page, sorts them, removes duplicates, and displays them in a new tab for inspection or copy and paste into other systems.
16,408 users
History Cleaner
Deletes browsing history older than a specified number of days.
16,332 users
automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
16,318 users
15,231 users
ScrollAnywhere
Scroll page without touching scroll-bar! Press Middle (Right / Left) mouse button anywhere on the page to scroll just like with scrollbar. Features also: - "grab and drag" scrolling - customizable scrollbars! - the Momentum auto-scroll
14,329 users
Livemarks
Get auto-updated RSS feed bookmark folders.
14,240 users
Clippings
Save frequently-entered text for pasting later.
13,960 users
Default Bookmark Folder
Allows you to choose the default bookmark location folder and quickly bookmark pages via a dedicated icon.
13,616 users
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
11,879 users
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
11,574 users
Stylebot
Change the appearance of the web instantly
10,767 users
Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
9,165 users
GIPHY for Firefox
Bring the power of a GIF search engine anywhere on the web. Respond to emails, tweets and more with GIFs quickly and easily. Add GIPHY GIFs to your Gmail, Facebook, Twitter and more. Just search, drag and drop or right click!
7,713 users