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!
Disable cookies for current domain.
Click on any HTML element to get the font info in a popup
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
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.
PDF API HTML5
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Code tree for GitHub
Quickly view the HTTP headers of the current tab.
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, ...
This extension allows you to add your own custom website specific CSS style sheets.
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
Zend Debugger Toolbar
Provides integration with Zend debugging and profiling tools.
Custom Style Script
WordPress Theme and Plugins Detector
Detects the theme and plugins used in WordPress and display information about them.
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
Browse JSON like you do it in Finder.
Open in GIMP photo editor
Adds a context menu item to send images directly to GIMP photo editor
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click
Nextsense XML Signing Component
Signing XML document.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
View all HTTP Requests and Responses sent between the Web browser and the Web server.
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Use Redux DevTools in the DevTools
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code