延伸套件
HTTP Headers
Quickly view the HTTP headers of the current tab.
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
WordPress Theme and Plugins Detector
Detects the theme and plugins used in WordPress and display information about them.
Open in GIMP photo editor
Adds a context menu item to send images directly to GIMP photo editor
Java Interview Questions
This is an Speed Dial extension for Java Interview Questions & Answers
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
JavaScript QR Code
Make QR Codes in JavaScript
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
Novibyte Issues Plugin
Jira Issues Management
AddJS
This extension allows you to add your own custom website specific JavaScript.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
SEO Analysis with Seoptimer
Just one click to SEO Analysis with Seoptimer
Webfonting it!
The simplest extension for working with web fonts
NoFollow
Outlines nofollow links, detects nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles
{DOM.Tree}
This extension show the element of a document in a tree view!
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
Google Analytics Debugger
A browser extension for debugging Google Analytics tracking code
Picture in Play
Indicates whether the `picture` element is in use on a page.
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Web Developer Checklist
Analyses any web page for violations of best practices
retire.js
Scanning website for vulnerable js libraries
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
CSS Gradient Inspector
Extends the Developer Tools, adding a sidebar that displays information about the gradients applied to the inspected element.
Income monitor
Fast balance viewer for your affiliate networks and partner programs
Update Notification
Get notified of Opera automatic updates
Nextsense XML Signing Component
Signing XML document.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
Blendup
A tool for web developers to preview blend modes on different page elements.
md5 hash generator
MD5 hash generator (offline mode)
Modify O Tabs
Automatically pin or rename a tab of a site you specify or change its icon.