Add extensions, get work done

Modify Header Value

Add, modify or remove a header for any request on desired domains.

Tile Tabs WE

Take tabs from parent windows and arrange them in layouts of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll. Save and re-open layouts.

Convert ugoira to gif or/and webm, pack manga for downloading and download novel on Pixiv.

Dark Theme for Google™

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

Mp3 Downloader for SoundCloud™

Add download link to all SoundClould tracks

Japanese dictionary with Anki integration

Block feed, shorts, related and other distractions on time-wasting sites like Instagram, Facebook, YouTube, Twitter, Reddit, LinkedIn...

Search by Image on Google

Right click on an image to search Google for related images or versions in different sizes.

Auto Fullscreen for Firefox Quantum

New Tong Wen Tang

Traditional and Simplified Chinese Converter

New Tab Tools

Customizes the new tab page. Add more tiles. Have a background image. Set new tile images and titles. See recently closed tabs. And more...

Yandex Evolution - Поиск Яндекс

Popular Russian search engine by Yandex (Яndex, Яндекс)

By blocking annoying ads and nosy trackers, Adaware AdBlock 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.

Sets "Always on Top" style for your Firefox window

Replaces thumbnails and modifies titles of videos on youtube.com and m.youtube.com

Youtube Ad Auto-skipper

Youtube Ad Skipper is an extension that auto skips ads after youtube provides a skip ad button. It does not block an ad.

Midnight Lizard

Custom color schemes for all websites: night mode, dark themes, blue light filter, screen shader, high contrast, grayscale, etc.

Open the link in a new tab depending on the setting.

Saves the current page as image file or copies it to clipboard.

Simplifies the GitHub interface and adds many useful features.

Add a badge to the toolbar that shows the number of currently open tabs in a window or all windows.

Non linked URL open with double click. and Google translate.

Temp Mail - Disposable Temporary Email

Temporary disposable email address. Protect your email from spam, bots and phishing with Temp-Mail.

This add-on adds a button to the toolbar. Clicking on it activates the Reader View even if the icon in the address bar is not present.