Featured Extensions

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Grammarly for Firefox Compatible with Firefox 57+ Featured

Grammarly will help you communicate more effectively. As you type, Grammarly flags mistakes and helps you make sure your messages, documents, and social media posts are clear, mistake-free, and impactful.

Rated 4 out of 5 stars (211)
361,339 users

Tab Scope Requires Restart Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (453)
65,361 users

DuckDuckGo Plus Featured

DuckDuckGo is the search engine that doesn't track you. This add-on makes DuckDuckGo your default search engine and includes some other useful features.

Rated 4 out of 5 stars (190)
331,589 users

CookieKeeper Featured

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (68)
10,990 users

Slim Add-ons Manager Featured

The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.

Rated 5 out of 5 stars (51)
6,840 users

Speed Dial (Lite) Compatible with Firefox 57+ Featured

Access to your favorite websites via an stylish speed dial!

Rated 3 out of 5 stars (15)
2,602 users

Private Tab Featured

Adds private tabs.

Rated 5 out of 5 stars (245)
49,218 users

Smart HTTPS Featured

Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.

Rated 4 out of 5 stars (28)
23,281 users

OmniSidebar Featured

Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!

Rated 5 out of 5 stars (125)
59,057 users

Blur Compatible with Firefox 57+ Featured

Protect your Passwords, Payments, and Privacy.

Rated 4 out of 5 stars (785)
82,004 users

Privacy Settings Featured

Alter Firefox's built-in privacy settings easily with a toolbar panel.

Rated 5 out of 5 stars (68)
18,925 users

DownThemAll! Featured

The first and only download manager/accelerator built inside Firefox!

Rated 4 out of 5 stars (1,807)
919,989 users

AdBlocker for YouTube™ Compatible with Firefox 57+ Featured

Removes all annoying Ads from YouTube

Rated 4 out of 5 stars (79)
257,255 users

FoxyTab Compatible with Firefox 57+ Featured

Collection of Tab Related Actions e.g. Copy Urls All/Left/Right, Close Left, Duplicate Tab, Copy Title, Close Host tabs, Keep host tabs,

Rated 5 out of 5 stars (4)
831 users

Copy Plain Text 2 Requires Restart Featured

Copies text without formatting

Rated 5 out of 5 stars (83)
30,516 users

Enhancer for YouTube™ Compatible with Firefox 57+ Featured

Tons of features to improve your user experience on YouTube™.

Rated 5 out of 5 stars (135)
170,380 users

uBlock Origin Featured

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (2,194)
3,681,621 users

Font Finder (revived) Compatible with Firefox 57+ Featured

Get all CSS styles of selected text

Rated 5 out of 5 stars (20)
8,911 users

Youtube Dark Mode Compatible with Firefox 57+ Featured

Switch youtube to dark mode. Dark mode will help devices save battery and useful for your sleeping. This dark mode is supported by https://www.emojionline.org

Rated 5 out of 5 stars (92)
2,893 users

EPUBReader Compatible with Firefox 57+ Featured

With EPUBReader you can read ePub files just in Firefox. No additional software needed!

Rated 4 out of 5 stars (214)
255,526 users