Picture in Play
Indicates whether the `picture` element is in use on a page.
Responsive Web Design Tester
Responsive Web Design Tester is a quick and easy way to test your responsive website.
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
Click on any HTML element to get the font info in a popup!
Disable cookies for current domain.
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
Extension source viewer
View source code of extensions in the Chrome Web Store, Firefox or Opera addon gallery. Has button to install from Chrome Web Store.
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!
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, ...
Custom Style Script
SEO-tools - информация о доменах, аудит сайтов на SEO ошибки, а также технический аудит любой страницы. Свыше 100 онлайн сервисов
This extension allows you to add your own custom website specific CSS style sheets.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
Quickly view the HTTP headers of the current tab.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
A browser extension that brings a new GitHub experience
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
DNS Checker - SEO and Domain Analysis
SEO and Domain Analysis Tool by DNS Checker. Provides SEO Report, Meta Redirects and 404s, Client IP, Domain IP & Geo Location, etc
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
The tool to overlap your website layout with a grid.
Web Capture for Jira
Take a screenshot, annotate it and upload directly to Jira.
The simplest extension for working with web fonts
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support