Modify Header Value
Add, modify or remove a header for any request on desired domains.
Disable cookies for current domain.
This extension allows you to add your own custom website specific CSS style sheets.
Click on any HTML element to get the font info in a popup
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
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!
Quickly view the HTTP headers of the current tab.
Code tree for GitHub
WordPress Theme and Plugins Detector
Detects the theme and plugins used in WordPress and display information about them.
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.
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Browse JSON like you do it in Finder.
Custom Style Script
View all HTTP Requests and Responses sent between the Web browser and the Web server.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
Java Interview Questions
This is an Speed Dial extension for Java Interview Questions & Answers
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
Nextsense XML Signing Component
Signing XML document.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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, ...
Use Redux DevTools in the DevTools
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
CSS Shapes Editor
Interactive editor for CSS Shapes.
An extention to show/inspect and analyze fonts in web-pages.
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
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click