Thematic (was Persona Switcher)
Quickly switch between your themes or reset the theme back to the default via a menu or the keyboard. You can also automatically rotate through all of your themes on a time interval you select. Works for Firefox and Thunderbird.
528 users
Disable Polymer on YouTube
The polymer redesign of YouTube has made the site very slow for Firefox users. This add-on adds the "disable_polymer" option to YouTube URLs in order to revert back to the old classic design.
527 users
OCR + Translate
Open source addon + server (see description) combo to run OCR + translations of images on browser page. Uses freely available models and can run totally offline
527 users
Privacy for WhatsApp Web (Auto Blur WA)
Automatically blurs messages, media, names, and more, on WhatsApp Web until you hover. Actively maintained community fork
524 users
OurStickys - Sticky Notes on every page
Add Persistent Sticky Notes anywhere on any web page, they will reappear when you re-open the page
524 users
Amazon Brand Detector
A browser extension that reveals Amazon brands and exclusive products while you shop online.
524 users
Blur. The Image and Video blur extension
A chrome extension that blur all images on a page, for when you want to be discreet or don't want to look at certain images.
523 users
Fullscreen Toggle Button
Adds a button to toggle fullscreen mode. Mainly made for Android to force fullscreen. Makes a small button in the bottom-right that forces fullscreen and auto-hides. Has a settings popup for options such as positioning.
522 users
Google & YouTube Cookie Consent Popup Blocker
Block “Before you continue” cookie consent popups on Google and YouTube
521 users
Pinterest Dark & Amoled Theme For Firefox
Forces Pinterest to use a pure black theme and a gray theme that actually works [Firefox Port by official developer. This extension has extra useful features unlike other ones.]
521 users
SixIndicator
Shows a simple icon, if IPv6 or IPv4 was used for the request of the site. When clicking on the icon, more information is shown, like the number of requests per domain and if these requests were made via IPv6 or IPv4.
520 users
Night Mode - Dark Theme
A universal dark theme. Night Mode is an extension that helps you quickly turn the screen (browser) to dark at night time. Toolbar button serves as an On & Off switch which enables you to easily and quickly turn the extension On or Off.
518 users
Porn site Blocker
A basic porn site blocker addons for firefox browser.t blocks the detected site automatically.You can help us to prevent the porn site. Please send us a review, create a issue and give the site name which site is not listed.
517 users
Scribens : Grammar Checker and Writing Assistant
Scribens is a grammar checker and a writing assistant.
516 users
YouTube Shorts Blocker
Remove YouTube shorts (toggleable) from YouTube videos feed, avoiding distractions.
514 users
Old Twitter Layout (2026)
Browser extension to return old Twitter layout from 2015 (and option to use 2018 design). This extension doesn't add any CSS on top of original Twitter. It's fully original client that replaces Twitter, making it much faster than alternatives.
513 users
Grayscale Bro
A minimal Firefox extension for monochrome browsing. Supports dark theme and grayscale only on selected hostnames. [Notice: Doesn't work at mozilla pages]
510 users
Muzli - Design inspiration hub
Your daily dose of design with industry news, tools, and inspiration - all in one place.
509 users
Re-Pagination - WebExtension fork
Load consecutive pages in a single tab at once, or view them in a slideshow, similar to AutoPager but not as automatic. Useful for searches, forums, and webcomics. This is a fork of Nils Maier's Re-Pagination addon, updated for Firefox Quantum.
508 users
