Пашырэньні
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Web Widgetizer
Web Widgetizer is a extension offering a range of features to enhance browsing. It allows users to create separate Opera windows for specific websites, manage favorite links, customize window dimensions, toggle auto-start, and open links in popup tabs via button click or shortcut (Ctrl + Shift + A). This versatile tool optimizes browsing convenience and efficiency.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
sha1 hash generator
SHA1 hash generator (offline mode)
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Apple Docs Force Default Language
Forces Apple's developer documentation to always open in a specific language
Rabbit URL Opener
Rabbit URL Opener (Rahul Digital) - Bulk URL's Opener Extension just lets you open multiple URLs at once. More about Rabbit URL Opener http://rahuldigital.org/url-opener/ http://rahuldigital.com/url-opener/
Sitemap Explorer: Check and View XML Sitemaps
This extension helps you find, inspect, export, and view XML Sitemap files for any site you navigate in a browser.
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
retire.js
Scanning website for vulnerable js libraries
Tabby Extension
Easily add BookMarks to Tabby from your preferred browser!
Tabby Opera Extension
Easily add BookMarks to Tabby from Opera!
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
PX to REM and REM to PX
PX / REM bidirectional converter
W3DNA
Type '*' plus press "space" and a search term into the Omnibox to open search in new tab.
AMP Validator
Automatically checks each page for AMP validation.
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
Copy Title And Url
Copy the title and url in markdown, pukiwiki, html format.
(X)HTML5 Checker
A small extension to validate the markup of current tab
showHTML
This extension shows information about HTML elements on a web page when you hover over them.
Webmaster menu
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
Pixel converter
Pixel converter is a crucial web development and design tool for converting pixel values into different measurement units like inches, centimeters, or percentages, ensuring consistency across diverse devices and screens in responsive web design.
Dev extensions reload
Reload enabled development extensions
GitHub Gloc
Gives you approximate count of lines of code on GitHub
Edit with Sublime Text
Live editing text and HTML content of the page with the Sublime Text from the page context or DevTools.
Bug Magnet
Bug Magnet
Involta Short links
Short link service
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.