Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.

Get rid of cookie warnings from almost all websites!

Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.

Build, save and share beautiful Firefox themes.

Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.

Create, modify, and quickly change tab groups

A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.

A global dark theme for the web

Multitask efficiently by controlling browser functions from the Plasma desktop.

Popular Adblock for Youtube™ Extension: Removes the video ads from Youtube™. Thanks to all AdBlock supporters!

Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.

Edit the contents of a web page prior to printing or saving. Elements in the web page can be edited, formatted, hidden or deleted. Unwanted content, such as adverts and sidebars, can easily be removed.

The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.

Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.

Re-implements the google image, "View Image" and "Search by Image" buttons.

Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

Tranquility Reader improves the readability of web articles by removing unnecessary elements like ads, images, social sharing widgets, and other distracting fluff.

The Privacy Extension For WhatsApp™ Web hides your messages from unwanted glimpses until you hover over them. In the search bar, you can disable the blur effect on all messages manually and specify what elements to blur.

Community version of the popular extension "I don't care about cookies"

https://github.com/OhMyGuus/I-Dont-Care-About-Cookies

Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.

Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.

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.

Augment your ChatGPT prompts with relevant web search results through web browsing.

Allows URI texts written in webpages to be loaded by double clicks.

A highly customizable dark theme for Google products (search, images, translate, and contacts)

Fast JSON viewer - highlights, shows items count/size, handles large files

Tab browsing with an added boost.

Modern, dark mode for Google Docs

Allow yourself to focus while using YouTube for work, recreation or education. Disable autoplay, remove sidebar, hide feed, comments, and more.

Declutter and refine the Twitter web experience.