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Browserling - Cross-browser testing
Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!
JavaScript QR Code
Make QR Codes in JavaScript
HTTP Headers
Quickly view the HTTP headers of the current tab.
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
PixelGrid
The tool to overlap your website layout with a grid.
(X)HTML5 Checker
A small extension to validate the markup of current tab
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
AddJS
This extension allows you to add your own custom website specific JavaScript.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
SelectorsHub
SelectorsHub helps to generate, write and verify the XPath & cssSelector.
md5 hash generator
MD5 hash generator (offline mode)
Lorem Fill
A webpage form filler that populates context specific random test data into forms elements.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Определение CMS - iTrack
Расширение для определения CMS сайта
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
KML/KMZ Viewer
Can be used to view KML/KMZ Files in the browser.
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
Web Capture for Jira
Take a screenshot, annotate it and upload directly to Jira.
Income monitor
Fast balance viewer for your affiliate networks and partner programs
Rabbit URL Opener
Rabbit URL Opener - Bulk URL's Opener Extension just lets you open multiple URLs at once
OctoLinker
OctoLinker – Links together, what belongs together.
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.
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
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
Edit with Sublime Text
Edit an HTML element and all its child nodes in Sublime Text editor with real-time updates
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.