Extensions
HTTP Headers
Quickly view the HTTP headers of the current tab.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Open in GIMP photo editor
Adds a context menu item to send images directly to GIMP photo editor
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Income monitor
Fast balance viewer for your affiliate networks and partner programs
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
AddJS
This extension allows you to add your own custom website specific JavaScript.
Picture in Play
Indicates whether the `picture` element is in use on a page.
SEO Wykop - wycena stron, analiza SEO
JavaScript QR Code
Make QR Codes in JavaScript
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
Modify O Tabs
Automatically pin or rename a tab of a site you specify or change its icon.
ColorHexa - Color Information and Conversion
Color tool converting and providing information about any color.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
SEO TOOLS - YATEO
Opens all the essential tools for SEO in one click.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
md5 hash generator
MD5 hash generator (offline mode)
Nextsense PDF Signing Component
Signing PDF document.
OctoLinker
OctoLinker – Links together, what belongs together.
sha1 hash generator
SHA1 hash generator (offline mode)
Zend Debugger Toolbar
Provides integration with Zend debugging and profiling tools.
MenuButton
Custom menu allows the user to create a menu to access various network resources.
Random password generator
A simple random password generator for Opera browser
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
Web Essentials
Interacts with Visual Studio extensions supporting Browser Link
GitLab - Tree view
Provides folder structure view for code in GitLab.
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
{DOM.Tree}
This extension show the element of a document in a tree view!
PageTester