Ekstensi
Random password generator
A simple random password generator for Opera browser
Apple Docs Force Default Language
Forces Apple's developer documentation to always open in a specific language
RDS bar
Quick SEO analysis of websites and pages, designed for webmasters and SEOs.
Picture in Play
Indicates whether the `picture` element is in use on a page.
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
Extensions for Mermaid
A browser extension for Chrome, Opera & Firefox that adds Mermaid language support to GitHub. A fork from the not updated GitHub + Mermaid extension.
SEO-tools
SEO-tools - информация о доменах, аудит сайтов на SEO ошибки, а также технический аудит любой страницы. Свыше 100 онлайн сервисов
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.
Responsive Web Design Tester
Responsive Web Design Tester is a quick and easy way to test your responsive website.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
InTab - Code CSS 2X Faster
Visually Code & Debug CSS In Your Browser
GitHub Projects Plus
Adds advanced labels management and other functionality to GitHub.
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any Page.
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.
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
Modify Header Value
Add, modify or remove a header for any request on desired domains.
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
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, ...
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
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!
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
(X)HTML5 Checker
A small extension to validate the markup of current tab
AddJS
This extension allows you to add your own custom website specific JavaScript.
SelectorsHub
SelectorsHub helps to generate, write and verify the XPath & cssSelector.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
GitHub (Enterprise) Projects Plus
[Deprecated] Adds advanced labels management and other functionality to GitHub.