Mga extension
Clear Cache
Clear your cache and browsing data with a single click of a button.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Rainbow States
Color AWS Step Functions states
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
(X)HTML5 Checker
A small extension to validate the markup of current tab
HexDump - Hex Viewer
Display file contents in hexadecimal, and ascii
sha1 hash generator
SHA1 hash generator (offline mode)
Octobox
Integrate Octobox directly into your GitHub workflow
NPM Version Stats
Show npm package version usage statistics inline on the npmjs.com package page in the versions tab
PerfectPixel by WellDoneCode
This extension helps develop your websites with pixel perfect accuracy!
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
retire.js
Scanning website for vulnerable js libraries
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
Octotree
GitHub on steroids
Extensions for Mermaid
A browser extension for Chrome, Opera & Firefox that adds Mermaid language support to GitHub. A fork from the not updated GitHub + Mermaid extension.
Web Edit
Easily edit websites temporarily with a click of a button.
SEO-tools
SEO-tools - information about domains, site audit for SEO errors, as well as technical audit of any page. Over 100 online services
Picture in Play
Indicates whether the `picture` element is in use on a page.
CSS & JS Injector
Easily customize your browsing experience CSS & JS Injector is a tool for developers, designers, and power users. Apply custom CSS styles and JavaScript to specific websites effortlessly. Boost productivity and customize the look, feel, and functionality of websites without altering its source code.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
TeamCity Notifier
Shows notifications about various events in TeamCity
Hex Calculator
Perform quick and accurate hexadecimal calculations — addition, subtraction, multiplication, and division with remainder — directly in your Opera browser.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Font Finder
An easy-to-use font inspector to get CSS styles of the selected element
Disable Cookies
Disable cookies for current domain.
Copy Title And Url
Copy the title and url in markdown, pukiwiki, html format.
TwicPics Companion
Using TwicPics has never been so easy!
Rabbit URL Opener
Rabbit URL Opener (Rahul Digital) - Bulk URL's Opener Extension just lets you open multiple URLs at once. More about Rabbit URL Opener http://rahuldigital.org/url-opener/ http://rahuldigital.com/url-opener/
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.