This TST addon fades away tabs that hasn't been visited for a while

The powerful Twitter client for desktop.

Highlights the line of text you are reading.

Prevents from autoplay HTML5 video

Direct Screen Sharing Desktop

Disables or enables the use of fonts specified by the web page.

Erweiterung für pr0gramm.com. Markiert bereits gesehene Bilder.

Adds a checkbox to the page context menu to toggle colors, set by the website author.

Allows you to copy content from sites with copy-protection.

Personas Rotator is a new companion for Personas Firefox add-on to change over 65000+ skins periodically on Firefox. What Will Your Browser Wear Now?

Black YouTube. Black YouTube theme protects eyes by changing Youtube

Selects a random color for each tab and displays the color while the tab is active. You can customize the colors to your liking and also set specific colors for websites.

A customisable New Tab page, with widgets and beautiful backgrounds

Pressing control and shift keys, double click away any element you want to hide. Control + shift + z to undo.

Syntax highlight for raw source code.

Adds a button to enable or disable global dark mode. Manual configuration is required since the default colors are still black text on white background.

The best clock to see in one glance the current date and time. With an option to see the digital clock in the browser toolbar. Show the analog clock in the menu bar of your web browser. You know in one blink the current date and time.

Changes the roblox.com favicon and other website icons to the classic look. Made by Conkley.

Displays a anime background image (random) every time you open a new tab.

Style your new tab - add beautiful and high quality pictures to new tabs.

A simple extension that opens new tab or duplicates right beside the current tab. Many other browsers have "open a new tab right next to current tab" feature built in but not Firefox, and so this extension was created.

A versatile extension that allows you to easily insert HTML code into your email, such as Gmail, Outlook, and Yahoo Mail.

Redirects all requests to wikipedia to wikiwand to improve user experience

Shows width, height, or alignment of selected area at anywhere on webpage in pixels.

Remove and Block ADs from iQiyi.com and iq.com.

Make Pixiv light and fast. Display all images automatically.

Immersive yourself in YouTube™ videos with ambient light!

Blocks video recommendations on Youtube to keep you from getting distracted. Search results and direct links are still available.

Make your Notion pretty with custom themes.

Hide YouTube end cards, which are displayed at the end of YouTube videos with a single click.