拡張機能
Disable Cookies
Disable cookies for current domain.
JSON Finder
Browse JSON like you do it in Finder.
SEO-tools
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Octotree
GitHub code tree on steroids
Font Inspector
Click on any HTML element to get the font info in a popup
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
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
HTTP Headers
Quickly view the HTTP headers of the current tab.
Firebug Lite for Opera 15+
Web Sniffer
View all HTTP Requests and Responses sent between the Web browser and the Web server.
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
RemoteDev DevTools
Use Redux DevTools in the DevTools
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!
Luminous: JavaScript events blocker
An experimental extension to identify, analyze and block code execution and event collection through JavaScript in your browser.
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, ...
Picture in Play
Indicates whether the `picture` element is in use on a page.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Flag & WHOIS SEO Domain Full Info
Return the domain's IP address , information about security, localization of server, ping, etc.
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.
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
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
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click
(X)HTML5 Checker
A small extension to validate the markup of current tab
Open in GIMP photo editor
Adds a context menu item to send images directly to GIMP photo editor