Extensions
(X)HTML5 Checker
A small extension to validate the markup of current tab
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Website scripting
Developers can add javascript codes in webpage. Like customizing other websites with our own codes.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
CSS Shapes Editor
Interactive editor for CSS Shapes.
OctoLinker
OctoLinker – Links together, what belongs together.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Edit with Sublime Text
Edit an HTML element and all its child nodes in Sublime Text editor with real-time updates
Get Thumbnails or Image to video YouTube
Make thumbnail previews or images from YouTube videos
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
KML/KMZ Viewer
Can be used to view KML/KMZ Files in the browser.
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
Check Wordpress Version
WordPress Vulnerability Scanner - Scan for vulnerabilities, version, themes, plugins and much more!
View Page Source
Get access to the page source with the click of a button
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
Income monitor
Fast balance viewer for your affiliate networks and partner programs
md5 hash generator
MD5 hash generator (offline mode)
PIX Studio Plugin
PIX Studio Plugin
Rabbit URL Opener
Rabbit URL Opener - Bulk URL's Opener Extension just lets you open multiple URLs at once
retire.js
Scanning website for vulnerable js libraries
showHTML
This extension shows information about HTML elements on a web page when you hover over them.
Window Performance Test
Get accurate performance timing for any page with this extension
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
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.
Involta Short links
Сервис сокращения ссылок
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
Nextsense PDF Signing Component
Signing PDF document.
Monitorito
This extension creates a real-time visualisation of your browsing activity
TeamCity Notifier
Shows notifications about various events in TeamCity
Tabby Extension
Easily add BookMarks to Tabby from your preferred browser!