Open in PDF Viewer
Easily open desired links in PDF viewer
11,278 个用户
Sponsored Search by SearchesCentral
Get better search results instantly from your home and new tab page!
11,199 个用户
Fonts Ninja
Speed up your design workflow!
11,048 个用户
RESTer
A REST client for almost any web service.
10,928 个用户
Progressive Web Apps for Firefox
A tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox
10,681 个用户
YouTube Search Engine
Adds YouTube search engine to search engines.
10,231 个用户
Daily Top Coupons & Custom Web Search
Install the Daily Top Coupons & Custom Web Search extension to get the latest coupons, deals & offers by clicking the favicon on the toolbar & enjoy Yahoo® search from your browser.
9,999 个用户
SQLite Manager
manage, edit, manipulate, plot and save one or multiple SQLite databases simultaneously
9,978 个用户
HTTP Header Live
Displays the HTTP header. Edit it and send it.
9,945 个用户
网课小工具
一个 大学生网课 学习工具,火狐,谷歌,油猴支持.全自动任务,视频倍速
9,927 个用户
Simple mass downloader
A simple but powerful mass downloader. Download links from multiple tabs at once, from the clipboard or selected text on web pages. Advanced filtering or multi-renaming options. User-defined automatic download folders.
9,778 个用户
Clockify Time Tracker
Track time from anywhere on the web and improve productivity.
9,565 个用户
Ignore X-Frame-Options Header
Allows all sites to be loaded in iframes, despite X-Frame-Options header settings.
9,396 个用户
Always on Top
Sets "Always on Top" style for your Firefox window
9,327 个用户
Remove Youtube Shorts
Remove Youtube Shorts tab in navigation tab, and redirect Youtube Shorts Videos to original Youtube video player, for better experience on desktop.
9,132 个用户
Pinned Google Calendar
Go to the pinned Google Calendar tab. If it doesn't exist, it's created.
9,116 个用户
ScriptCat
脚本猫,一个可以执行用户脚本的浏览器扩展,万物皆可脚本化,让你的浏览器可以做更多的事情!
9,087 个用户
Export Cookies
Export cookies to a Netscape format cookies.txt file.
8,950 个用户
Tab Counter
Add a badge to the toolbar that shows the number of currently open tabs in a window or all windows.
8,851 个用户
Channel Blocker
Are you annoyed by YouTube™s video recommendations? Our Add-on enables the function of blocking anything you'd like. Block separate videos, users or whole channels with only one click!
8,742 个用户
Substital
Add subtitles to any video or movie online. Be it on Netflix, Disney+, Youtube or any other online streaming platform.
8,679 个用户
Highlighter + Notes
Add Highlights and Notes to a Web Page
8,657 个用户
Simplify Copilot – Autofill job applications
The better way to job search. Quick apply and autofill job applications in one click. Track jobs, companies, contacts, resumes & more!
8,522 个用户
axe DevTools® - Web Accessibility Testing
Add accessibility auditing to the Firefox Developer Tools
8,454 个用户
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.
8,443 个用户