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Web Capture for Jira
Take a screenshot, annotate it and upload directly to Jira.
Picture in Play
Indicates whether the `picture` element is in use on a page.
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.
SEO-tools
SEO-tools - информация о доменах, аудит сайтов на SEO ошибки, а также технический аудит любой страницы. Свыше 100 онлайн сервисов
Advanced Site Checker
Check your site for issues.
Random password generator
A simple random password generator for Opera browser
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
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.
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any Page.
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
InTab - Code CSS 2X Faster
Visually Code & Debug CSS In 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!
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
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, ...
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
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
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
(X)HTML5 Checker
A small extension to validate the markup of current tab
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
GitHub Projects Plus
Adds advanced labels management and other functionality to GitHub.
Get Thumbnails or Image to video YouTube
從YouTube視頻製作縮略圖或圖像
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
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
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.