Tabs Backup & Restore
Keep manual or automatic backups of all tabs*, and restore on demand. Can also export backup file to disk to restore later, or to another profile, even on another computer or OS, as long as it has Tabs Backup & Restore installed. *(See description)
760 users
Simple Link Checker
Redirect Link Checker will check all links on your page to find broken and redirect links
760 users
PageSpeed Insights
Open PageSpeed Insights to analyze the web page on the current opened tab.
758 users
Resize Window & Viewport
Resize browser window or viewport to desired screen widths. Firefox's Responsive Design Mode (Ctrl + Shift + M) is great for mobile devices emulation.
757 users
Load timer
Displays page load time in the toolbar
752 users
ARC Toolkit
Accessibility testing tool from TPGi
751 users
Transparent standalone images
This add-on renders standalone images on a transparent background, so you can see the image in all its glory!
750 users
Quick Accept-Language Switcher
Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.
741 users
ExtPul-AGHU
ExtPul-AGHU: Adiciona funcionalidade de impressão de pulseira para todos os pacientes, sem dependência de internação.
737 users
Neeno's Cookie Importer
Import, export, edit, and backup cookies. Includes conflict resolution, cookie locking, advanced flag editing, session snapshots, and a secure review stage. Supports incognito and containers. The definitive session management tool.
736 users
SugarMelt
Allows you to change font/style; also adds cheats
732 users
Time Zone Converter - Savvy Time
Time zone and local time converter. Compare and convert time between many locations at a time.
731 users
Open With Photoshop
Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.
729 users
Website Downloader - Source Code Copier
Download websites source code and assets
728 users
IdeaPi: Chat Exporter for ChatGPT, Gemini & Claude
Export ChatGPT, Gemini, Claude, and DeepSeek conversations to Markdown, or sync them to IdeaPi for workflow processing.
711 users
ChatGPT Timestamp
Displays timestamps for ChatGPT messages
708 users
Blackfire Profiler
Profile your PHP application from your browser
704 users
React Context DevTool
React Context DevTool is a debugging tool for React Context and useReducer API.
704 users
Zoho Annotator
The most elegant and efficient annotation tool.
703 users
Request Control
An extension for controlling requests.
701 users
Claude Chat Exporter
Export your Claude conversations to Markdown, JSON, or HTML — complete, with artifacts, thinking blocks, inline citations and full source URLs. Clean output, ready for Obsidian or Claude Projects.
700 users
Cloudflare Optics
Cloudflare Optics is a browser extension that helps display interesting information when you visit a site, particularly if that site is proxied through Cloudflare.
697 users
网页图片批量下载
组件可以用来在网页上检测图片如.jpg/.jpeg/.png/.bmp/.webp等各种格式的图片,用户可自由选择这些图片并批量下载这些图片。
691 users
Custom CSS
Overwrite or inject custom CSS into website.
691 users
Web Editor
Edit the every web page you want !! .... Making your own custom web page , using any other web page is just a click away !!! You can convert any web page into an editable document , which can then be edited and saved .
685 users