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W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
sha1 hash generator
SHA1 hash generator (offline mode)
InTab - Code CSS 2X Faster
Visually Style Any Website In Any Browser
Window Performance Test
Get accurate performance timing for any page with this extension
Check Wordpress Version
WordPress Vulnerability Scanner - Scan for vulnerabilities, version, themes, plugins and much more!
Automatically login to Basic Authentication using data based on URL regexp.
Outlines nofollow links, detects nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles
PX to REM and REM to PX
PX / REM bidirectional converter
Shows notifications about various events in TeamCity
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
A tool for web developers to preview blend modes on different page elements.
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
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
md5 hash generator
MD5 hash generator (offline mode)
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Shuffle Extension Toolbar
Customize the sequence of extension icons as you like
This extension creates a real-time visualisation of your browsing activity
Monitor Jenkins build state and node state, and provide some convenient services.
Fast balance viewer for your affiliate networks and partner programs
Scanning website for vulnerable js libraries
The easiest way to measure your performance budget
Convert among bits, bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes and more.
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.
Can be used to view KML/KMZ Files in the browser.
Open in Waterfox
Open current page, link, or all tabs in the Waterfox browser.
Scan your NFT assets.
Service Worker Detector
This extension detects if a website registers a Service Worker.
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
This extension shows information about HTML elements on a web page when you hover over them.
Small improvements which will make your work with Sitecore much easier.
TestCase Studio record the user actions performed on a web application in English Sentences.