Browserling - Cross-browser testing
Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
PDF API HTML5
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Live editor for CSS and LESS - Magic CSS
Live preview of CSS/LESS code with an in-page editor. Autocomplete, convert LESS to CSS, beautify, minify, CSS reloader, linter, ...
Code tree for GitHub
Click on any HTML element to get the font info in a popup
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Use Redux DevTools in the DevTools
OctoLinker is the easiest and best way to navigate between files and projects on GitHub.com. Files containing the following keywords will now have links that redirect you either to the relative file or to the projects GitHub page. Depending on the value, it may redirect you to an external website like a manual page or another service.
Browse JSON like you do it in Finder.
Определение CMS - iTrack
Расширение для определения CMS сайта
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
This extension allows you to add your own custom website specific CSS style sheets.
Zend Debugger Toolbar
Provides integration with Zend debugging and profiling tools.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click
SEO TOOLS - YATEO
Opens all the essential tools for SEO in one click.
View all HTTP Requests and Responses sent between the Web browser and the Web server.
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
Corser - Authorize CORS requests
Cross-browser extension for authorizing cross-origin resource sharing (CORS) requests. This extension can be installed on browsers supporting the WebExtensions API (https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions) It intercepts all CORS requests and responses headers, and records/adds/changes their values so as to authorized unauthorized CORS requests. Use this extension only for testing purposes
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
This extension is only made for Pakistan Hajj Mission - Medina. It works on Data Entry website and this is Developed by Hamza Mughal
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
Quickly view the HTTP headers of the current tab.
Flag & WHOIS SEO Domain Full Info
Return the domain's IP address , information about security, localization of server, ping, etc.
A webpage form filler that populates context specific random test data into forms elements.