Leudachain
Disable Cookies
Disable cookies for current domain.
Fontstorage
The simplest extension for identifying and selecting fonts on a website.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Web Edit
Easily edit websites temporarily with a click of a button.
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
Picture in Play
Indicates whether the `picture` element is in use on a page.
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!
Octotree
GitHub on steroids
CSSViewer
CSSViewer
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
BuiltWith Technology Profiler
Find out what the website you are visiting is built with using this extension.
Random password generator
A simple random password generator for Opera browser
Image Resizer
Rescale multiple images into different sizes in a single step
Page Edit
Make any webpage into a content editable document and modify it via toolbar popup!
Squeezeimg - convert & compress images, WEBP, JP2
This extension will optimization image a page using Squeezeimg
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
Font Inspector
Click on any HTML element to get the font info in a popup!
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.
retire.js
Scanning website for vulnerable js libraries
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
TeamCity Notifier
Shows notifications about various events in TeamCity
(X)HTML5 Checker
A small extension to validate the markup of current tab
IP Geolocation Lookup
IP Location Lookup by ipwhois.io
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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, ...
PDF API HTML5
Mini SDK JavaScript and APIs library to create PDF file for web apps
RestMan
RESTMan is a browser extension to work on http requests.
SelectorsHub
xPath plugin to auto generate, write and verify xpath & cssSelector.
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.