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SeoQuake extension
SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others
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.
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, ...
JSON Formatter & Beautifier
makes it simple to read JSON Code for browser
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.
Youtube converter button - YTLoad
YouTube downloader FREE - Convert videos to MP3 MP4
Page Edit
Make any webpage into a content editable document and modify it via toolbar popup!
Font Inspector
Click on any HTML element to get the font info in a popup!
Web Edit
Easily edit websites temporarily with a click of a button.
Disable Cookies
Disable cookies for current domain.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the 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.
Network Information
Useful information about your system's connection including, type, speed, and rtt.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Random password generator
A simple random password generator for Opera browser
Strike Out Nofollow Links
Just strikes out nofollow links via CSS3 selectors.
GrabzIt Web Scraping Assistant
Create Web Scrapes online easier than ever before with GrabzIt's Web Scraping Assistant.
Website scripting
Developers can add javascript codes in webpage. Like customizing other websites with our own codes.
Picture in Play
Indicates whether the `picture` element is in use on a page.
RestMan
RESTMan is a browser extension to work on http requests.
sha1 hash generator
SHA1 hash generator (offline mode)
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
Yandex Wordstat Regions
Расширение, возвращает полное дерево регионов РФ в сервис подбора слов Яндекс (wordstat)
IP Geolocation Lookup
IP Location Lookup by ipwhois.io
NoFollow
Outlines nofollow links, detects nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles
PX to REM and REM to PX
PX / REM bidirectional converter
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
SelectorsHub
xPath plugin to auto generate, write and verify xpath & cssSelector.
Nextsense PDF Signing Component
Signing PDF document.