Extensions
Webmaster menu
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
Apple Docs Force Default Language
Forces Apple's developer documentation to always open in a specific language
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.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Piral Inspector
The official Piral developer tools browser extension.
Box Direct Link Generator
Box Direct Link Generator makes downloading files from Box simple and fast. Just paste a Box shared URL, and the extension will generate a direct download link for you. It also shows useful details like the file name, file size, and file type. With a sleek design and features like a "Copy Link" button, it’s perfect for quickly accessing and sharing files. No more hassle—just easy, direct downloads!
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
Page Load Time
Displays page load time in the toolbar
Shuffle Extension Toolbar
Customize the sequence of extension icons as you like
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
Toggle Environment
Toggle between development environment url's
W3DNA
Type '*' plus press "space" and a search term into the Omnibox to open search in new tab.
Blendup
A tool for web developers to preview blend modes on different page elements.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
Ninja Van Tracking
Track your Ninja Van Tracking Onilne
Polypad (Open in App)
Polypad Open in App.
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.
GitHub Privacy
GitHub Timestamp Privacy redacts timestamps such as commit dates on GitHub. The precision of timestamps is reduced according to your preference. Click on individual timestamps to reveal more precision if needed.
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.
AMP Validator
Automatically checks each page for AMP validation.
TeamCity Notifier
Shows notifications about various events in TeamCity
sha1 hash generator
SHA1 hash generator (offline mode)
Window Performance Test
Get accurate performance timing for any page with this extension
Dev extensions reload
Reload enabled development extensions
Stethoscope
Check the health of a github repo with one easy step.
PX to REM and REM to PX
PX / REM bidirectional converter
Extension Auditor
Browser Extension Security & Privacy Analyzer
DMARC Check
Check DMARC status for the current domain
Service Worker Detector
This extension detects if a website registers a Service Worker.
SelectorsHub Pro
xPath plugin to auto generate, write and verify xpath & cssSelector.
Open in Waterfox
Open current page, link, or all tabs in the Waterfox browser.