Html Validator
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.
7,298 users
Session Sync
Save sessions as bookmarks and access them across devices. Advanced Session Manager: edit, save, change, restore. It can also be your best Bookmark Manager
7,172 users
MySessions
A simple session manager. You can quickly save your current browser state and reload it whenever necessary. This is not a replacement for Michael Kraft's "Session Manager", but it allows you to import saved sessions from the "Session Manager".
6,946 users
ReloadMatic: Automatic Tab Refresh
ReloadMatic automates the periodic reloading / refreshing of browser tabs. It offers cache control, custom intervals, POST support and many other features. It also integrates with browser features such as tab restore, pinning, and incognito mode.
6,901 users
RoSeal - Augmented Roblox Experience
Improve your Roblox website experience, seals included!
6,777 users
TFT Trade Extension
An extension which integrates TFT branded tools into your browser. It provides safer and easier trading in Path of Exile.
6,604 users
Open with VLC
Add a content menu Open with VLC on audio / video links. Links must contains file extensions (.mp4, .mkv, ...) Prerequisite : - VLC must be opened - HTTP web interface must be enabled (Settings > Interface > HTTP web interface)
6,573 users
FoxReplace
Lets you replace text in web pages. You can define a substitution list and apply it automatically or at your own discretion, or make individual substitutions. You can use this as a filter, or just for fun :)
6,410 users
AWS Extend Switch Roles
Extend your AWS IAM switching roles. You can set the configuration by aws config format
6,354 users
Google Page Translate
Adds a toolbar button to open Google Page Translate for the current tab.
6,341 users
Avast Online Security & Privacy
Secure your Mozilla Firefox browser against real-time online threats, trackers, and scams. We’ll check every site you visit, from Facebook to your bank, so nothing puts you or your data at risk. Join a growing community of 400 million Avast users.
6,323 users
Live Server Web Extension
Live Reload feature for Dynamic content (PHP, Node.js, ASPNET - Whatever, it doesn't matter). This extension is for Live Server - VSCode Extension (required v3.0.0+).
6,239 users
Ultrawidify
Aspect ratio fixer for Youtube. Allows improperly encoded videos to properly fit ultrawide and superwide displays (e.g. 21:9) — and it attempts to do so automatically.
6,200 users
Easy Youtube Video Downloader
No# 1 Rated Youtube Video Downloader for firefox web-browser with MP3 and Full-HD downloads. Instant, one-click Youtube video downloader with high-quality 256Kbps/128Kbps MP3 and Full-HD video downloading options.
6,122 users
Export Tabs URLs
List the URLs of all the open tabs and copy that list to clipboard or export it to a file. Features: - include titles - custom format (e.g. markdown, html…) - filter tabs - limit to current window - list non-HTTP(s) URLs - ignore pinned tabs
6,110 users
Steam URL Opener
Allows you to open URLs inside Steam Client to save the hassle of logging in normal browser (with a single click on a button).
6,086 users
Recordify Title Discover
A plugin which will read the Title/Author from the current streaming service and provides it to Recordify, a third party recording application made by Abelssoft
5,957 users
Pinned GMail
Go to the pinned GMail tab. If it doesn't exist, it's created. It also alerts you the unread emails.
5,940 users
