Auto Highlight
🟨 Auto Highlight will help you see what's important on the web! ✅ ⚡ Supports RegExp search and many style and highlight options ⭕ 🥷 Hide text by setting font size to zero! 🔄️ Synchronize highlighter rules across devices.
2,115 users
LiteTube: Fix YouTube Lag & Adblock Detection
Fix YouTube Lag / Adblock Detection on Firefox issue by utilizing the lightweight Mobile API Lightweight YouTube (m.) without ads. Background Play, AdBlock, SponsorBlock, and Max Quality in one.
2,107 users
Basic JSON Formatter
Adds a page action to pretty-print JSON. Unlike similar extensions, this simply pretty-prints it. It doesn't add any kind of viewer, colors, or collapsing. If you want this to work as expected, disable devtools.jsonview.enabled in about:config.
2,065 users
Note Sidebar for Firefox
Simple note sidebar which can be used to write a note, record thoughts, to-do list, meeting notes, etc.
2,063 users
Font Changer
Font Changer allows you change the font of any website with your preferred Google Web Font quickly and easily. Just clicking the extension icon for the options.
2,060 users
Block YouTube Feed - Homepage, Sidebar Videos
Block the homepage feed, sidebar suggestions, and end screen feed on YouTube.
2,053 users
Bring Twitter Back
Turns X back to Twitter by replacing all instances of the logo, replacing the new names ("post," "repost," etc.) with their old ones, and replacing the "X" name with "Twitter" on tabs and on the website.
1,987 users
Old Twitter Layout (2026)
An extension that returns old Twitter's look from 2015 or 2018. WORKS IN 2026!
1,973 users
Print/Print Preview Context
Adds Print, Print Preview and Save as PDF commands to the context menu.
1,964 users
YouTube Shorts Normal Player
Plays YouTube Shorts in the normal YouTube player so you can rewind the the videos.
1,963 users
Pesticide
This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.
1,948 users
Vertical Tabs Reloaded
This Firefox add-on arranges tabs in a vertical rather than horizontal fashion. Hide and display manually the tab sidebar with a hotkey (Ctrl+Shift+V) or by clicking on the VTR icon.
1,946 users
Multiple Paste and Go Button
This add-on provides a button to open multiple URLs from clipboard.
1,938 users
Youtube List View
Brings back the list view for the subscriptions page and more. Click the extension icon for customization options.
1,936 users
Rotate that Video Player
Improve your video experience by effortlessly rotating your video clips by 90, 180, or 270 degrees.
1,930 users
