Extensions
Favicon Stealer
Very simple thing for their job
SelectorsHub
Locators Plugin to Auto Generate and Verify Playwright Locators, XPath & CSS Selectors.
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
showHTML
This extension shows information about HTML elements on a web page when you hover over them.
W3DNA
Type '*' plus press "space" and a search term into the Omnibox to open search in new tab.
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
Password Show - Reveal Login Passwords
Reveal hidden password fields only during login. Includes whitelist and blacklist options.
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.
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.
Window Performance Test
Get accurate performance timing for any page with this extension
Edit with Sublime Text
Live editing text and HTML content of the page with the Sublime Text from the page context or DevTools.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
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.
PX to REM and REM to PX
PX / REM bidirectional converter
Design Mode
Edit any page's content by switching to design mode, where you can modify the content and drag images around like a Word Editor
Simple WCAG Contrast Checker
Checks color contrast on the current page against WCAG contrast requirements.
Quick Schema - JSON-LD Generator
Generate and copy LocalBusiness schema markup with one click. A free tool by Ideal Media Pro.
Nextsense PDF Signing Component
Signing PDF document.
WebMoney Advisor Next
Internet users feedback about the sites
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
Dev extensions reload
Reload enabled development extensions
Service Worker Detector
This extension detects if a website registers a Service Worker.
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
Webmaster menu
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
Open in Waterfox
Open current page, link, or all tabs in the Waterfox browser.
Tech Finder - Website Technology Detector
Discover what technologies and frameworks websites are using with detailed analysis and categorization.
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.
DMARC Check
Check DMARC status for the current domain
Check Wordpress Version
WordPress Vulnerability Scanner - Scan for vulnerabilities, version, themes, plugins and much more!
TestCase Studio
TestCase Studio record the user actions performed on a web application in English Sentences. Best alternative for Selenium IDE
Brie
Report bugs faster!