Extensões
WebMoney Advisor
Internet users feedback about the sites
AddJS
This extension allows you to add your own custom website specific JavaScript.
ColorHexa - Color Information and Conversion
Color tool converting and providing information about any color.
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
PixelGrid
The tool to overlap your website layout with a grid.
(X)HTML5 Checker
A small extension to validate the markup of current tab
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Flag & WHOIS SEO Domain Full Info
Return the domain's IP address , information about security, localization of server, ping, etc.
Web Developer Checklist
Analyses any web page for violations of best practices
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Modify O Tabs
Automatically pin or rename a tab of a site you specify or change its icon.
Luminous: JavaScript events blocker
Uma extensão experimental para identificar, analisar e bloquear a execução de códigos e a coleta de eventos via JavaScript em seu navegador.
Zend Debugger Toolbar
Provides integration with Zend debugging and profiling tools.
AMP Validator
Automatically checks each page for AMP validation.
JavaScript QR Code
Make QR Codes in JavaScript
Octotree Pro
GitHub code tree on steroids
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Webfonting it!
The simplest extension for working with web fonts
PageTester
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
Определение CMS - iTrack
Расширение для определения CMS сайта
KML/KMZ Viewer
Can be used to view KML/KMZ Files in the browser.
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
DomainUserAgent
This extension changes the UserAgent sent by your browser on a per-domain base. You can set up a different UserAgent for a specific domain, but still use the default one otherwise.
OctoLinker
OctoLinker – Links together, what belongs together.
Random password generator
A simple random password generator for Opera browser
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
Lorem Fill
A webpage form filler that populates context specific random test data into forms elements.
Notifier for GitHub
Displays your GitHub notifications unread count