एक्सटेंशन
PX to REM and REM to PX
PX / REM bidirectional converter
JavaScript QR Code
Make QR Codes in JavaScript
Window Performance Test
Get accurate performance timing for any page with this extension
Password Show - Reveal Login Passwords
Reveal hidden password fields only during login. Includes whitelist and blacklist options.
Website Links Checker
This tool helps you check all links from a page you are currently viewing.
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
Hex Calculator
Perform quick and accurate hexadecimal calculations — addition, subtraction, multiplication, and division with remainder — directly in your Opera browser.
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
Stethoscope
Check the health of a github repo with one easy step.
W3DNA
Type '*' plus press "space" and a search term into the Omnibox to open search in new tab.
InTab - Code CSS 2X Faster
Visually Style Any Website In Any Browser
Favicon Stealer
Very simple thing for their job
Nextsense PDF Signing Component
Signing PDF document.
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.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
DomainUserAgent
This extension changes the UserAgent sent by your browser on a per-domain base. You can set up a different UserAgent for a specific domain, but still use the default one otherwise.
Edit with Sublime Text
Live editing text and HTML content of the page with the Sublime Text from the page context or DevTools.
Tech Finder - Website Technology Detector
Discover what technologies and frameworks websites are using with detailed analysis and categorization.
Extension Auditor
Browser Extension Security & Privacy Analyzer
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Sheets2JSON - Convert Google Sheets
Convert public Google Sheets into clean JSON or CSV. Sheet2JSON is a lightweight extractor that reads Google Sheets and outputs structured data formats that are ready to use in websites, apps, and scripts.
Brie
बग की रिपोर्ट तेज़ी से करें!
Simple WCAG Contrast Checker
Checks color contrast on the current page against WCAG contrast requirements.
Shuffle Extension Toolbar
Customize the sequence of extension icons as you like
TestCase Studio
TestCase Studio record the user actions performed on a web application in English Sentences. Best alternative for Selenium IDE
Bug Magnet
Bug Magnet
Blendup
A tool for web developers to preview blend modes on different page elements.
Dev extensions reload
Reload enabled development extensions
Encode Decode HTML
Encode HTML to show it in the HTML pages a code instead of rendered HTML. Decode HTML to convert it back to HTML code
DMARC Check
Check DMARC status for the current domain
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