Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Firebug Lite for Opera 15+
Extension source viewer
View source code of extensions in the Chrome Web Store, Firefox or Opera addon gallery. Has button to install from Chrome Web Store.
Custom Style Script
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Disable cookies for current domain.
PDF API HTML5
Browse JSON like you do it in Finder.
This extension allows you to add your own custom website specific CSS style sheets.
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, ...
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
View all HTTP Requests and Responses sent between the Web browser and the Web server.
An extention to show/inspect and analyze fonts in web-pages.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
Modify Header Value
Add, modify or remove a header for any request on desired domains.
A browser extension that brings a new GitHub experience
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
A small extension to validate the markup of current tab
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!
Get Thumbnails or Image to video YouTube
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
ColorHexa - Color Information and Conversion
Color tool converting and providing information about any color.
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.