Extensiones
RemoteDev DevTools
Use Redux DevTools in the DevTools
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
SEO-tools
Picture in Play
Indicates whether the `picture` element is in use on a page.
Disable Cookies
Disable cookies for current domain.
Firebug Lite for Opera 15+
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
JSON Finder
Browse JSON like you do it in Finder.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
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!
Web Sniffer
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.
Font Inspector
Click on any HTML element to get the font info in a popup
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
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, ...
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
AddJS
This extension allows you to add your own custom website specific JavaScript.
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
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
JavaScript QR Code
Make QR Codes in JavaScript
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
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.
stylish-hub
A browser extension that brings a new GitHub experience
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
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