Leudachain
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
OCR - Image Reader
A powerful optical character recognition (OCR) extension to capture and convert images to text
Responsive Web Design Tester
Responsive Web Design Tester is a quick and easy way to test your responsive website.
Picture in Play
Indicates whether the `picture` element is in use on a page.
Disable Cookies
Disable cookies for current domain.
NFT Scanner
Scan your NFT assets.
Random password generator
A simple random password generator for Opera browser
Custom Style Script
Add Custom JavaScript (JS) Code or Styles (CSS) to any Page.
AddJS
This extension allows you to add your own custom website specific JavaScript.
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Extension source viewer
View source code of extensions in the Chrome Web Store, Firefox or Opera addon gallery. Has button to install from Chrome Web Store.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
SEO-tools
SEO-tools - информация о доменах, аудит сайтов на SEO ошибки, а также технический аудит любой страницы. Свыше 100 онлайн сервисов
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
stylish-hub
A browser extension that brings a new GitHub experience
Browserling - Cross-browser testing
Cross-browser test websites in the most popular browsers such as Internet Explorer, Edge, Chrome, Firefox, Safari and Opera. Try for free!
NetworkMonitor
Shows the response times and uptime of a desired server. Useful to see how performs internet or a wireless access point.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Web Capture for Jira
Take a screenshot, annotate it and upload directly to Jira.
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
AddCSS
This extension allows you to add your own custom website specific CSS style sheets.
(X)HTML5 Checker
A small extension to validate the markup of current tab
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Live editor for CSS and LESS - Magic CSS
Live preview of CSS/LESS code with an in-page editor. Autocomplete, convert LESS to CSS, beautify, minify, CSS reloader, linter, ...
Selenium Page Object Generator
A nimble and flexible Selenium Page Object Model generator to improve agile testing process velocity.
DNS Checker - SEO and Domain Analysis
SEO and Domain Analysis Tool by DNS Checker. Provides SEO Report, Meta Redirects and 404s, Client IP, Domain IP & Geo Location, etc
Website scripting
Developers can add javascript codes in webpage. Like customizing other websites with our own codes.
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu