Laajennukset
Polypane helper
Open the current page or links in Polypane, the developer tool for responsive web development and design.
OctoLinker
OctoLinker – Links together, what belongs together.
JavaScript QR Code
Make QR Codes in JavaScript
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
fonts infos
An extention to show/inspect and analyze fonts in web-pages.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
HTTP Headers
Quickly view the HTTP headers of the current tab.
GitHub Projects Plus
Adds advanced labels management and other functionality to GitHub.
Rabbit URL Opener
Rabbit URL Opener - Bulk URL's Opener Extension just lets you open multiple URLs at once
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
Nextsense XML Signing Component
Signing XML document.
MenuButton
Custom menu allows the user to create a menu to access various network resources.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
SelectorsHub
SelectorsHub helps to generate, write and verify the XPath & cssSelector.
Webfonting it!
The simplest extension for working with web fonts
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
GitHub (Enterprise) Projects Plus
[Deprecated] Adds advanced labels management and other functionality to GitHub.
retire.js
Scanning website for vulnerable js libraries
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Involta Short links
Сервис сокращения ссылок
showHTML
This extension shows information about HTML elements on a web page when you hover over them.
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
.no { CSS }
Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
Определение CMS - iTrack
Расширение для определения CMS сайта
TechsFound
Find Running Technologies on Website
Modify O Tabs
Automatically pin or rename a tab of a site you specify or change its icon.