Extensiones
Picture in Play
Indicates whether the `picture` element is in use on a page.
RemoteDev DevTools
Use Redux DevTools in the DevTools
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
SEO-tools
Firebug Lite for Opera 15+
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
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!
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Disable Cookies
Disable cookies for current domain.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
JSON Finder
Browse JSON like you do it in Finder.
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, ...
Font Inspector
Click on any HTML element to get the font info in a popup
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
Web Sniffer
View all HTTP Requests and Responses sent between the Web browser and the Web server.
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
stylish-hub
A browser extension that brings a new GitHub experience
AddJS
This extension allows you to add your own custom website specific JavaScript.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
HTTP Headers
Quickly view the HTTP headers of the current tab.
Get Thumbnails or Image to video YouTube
Hacer miniaturas o imágenes de vídeos de YouTube
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
JavaScript QR Code
Make QR Codes in JavaScript
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Flag & WHOIS SEO Domain Full Info
Return the domain's IP address , information about security, localization of server, ping, etc.
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
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