扩展
Disable Cookies
Disable cookies for current domain.
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
SEO-tools
Firebug Lite for Opera 15+
与Firebug相同的外观，实时检查HTML，修改样式，强大的console功能，清爽版Firebug等你体验。
RemoteDev DevTools
Use Redux DevTools in the DevTools
Luminous: JavaScript events blocker
An experimental extension to identify, analyze and block code execution and event collection through JavaScript in your browser.
Определение CMS - iTrack
Расширение для определения CMS сайта
Octotree Pro
GitHub code tree on steroids
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
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
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
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.
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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!
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Web Developer Checklist
Analyses any web page for violations of best practices
KML/KMZ Viewer
Can be used to view KML/KMZ Files in the browser.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Lorem Fill
A webpage form filler that populates context specific random test data into forms elements.
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
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Website Color Changer
Extends the Developer Tools, adding a sidebar for colors manipulation
Web Sniffer
View all HTTP Requests and Responses sent between the Web browser and the Web server.
AddJS
This extension allows you to add your own custom website specific JavaScript.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Remove cookie(s) for the current domain
Remove cookie(s) for the current site with just one click