OctoLinker – Links together, what belongs together.
Change any webpage into its design mode (edit mode) where you can modify the content and drag images around like a Word Editor
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Live HTTP Headers
Monitor all HTTP/HTTPs traffic from your browser.
Website Analysis & SEO Tool
Website SEO audit tool that provides website analysis in SEO, performance, validity, security, accessibility and other criteria.
Scanning website for vulnerable js libraries
Gridify - Keyboard Link Selector
Select any link, image, input box, or a selectable region on the current page without using the mouse just by a few keyboard hits
Quickly view the HTTP headers of the current tab.
PX to REM and REM to PX
PX / REM bidirectional converter
The simplest extension for working with web fonts
Wayback machine website
Online service that have 452 billion web pages saved over time and who is domain tool in context menu
ChroPath for Opera
AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support
WordPress Theme and Plugins Detector
This tool detects theme and plugins used on WordPress sites and displays information about them.
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/
Sitemap Explorer: Check and View XML Sitemaps
This extension helps you find, inspect, export, and view XML Sitemap files for any site you navigate in a browser.
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
View Page Source
Get access to the page source with the click of a button
Nextsense PDF Signing Component
Signing PDF document.
CSS Shapes Editor
Interactive editor for CSS Shapes.
NsLookup - Find DNS Records
A simple and powerful tool for querying DNS records
Adds new items to browser context menu that open various analyzes of browsed web pages and sites.
The tool to overlap your website layout with a grid.
Outlines nofollow links, detects nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles
Automatically checks each page for AMP validation.
Apple Docs Force Default Language
Forces Apple's developer documentation to always open in a specific language
Involta Short links
Сервис сокращения ссылок
CSS3 Button Maker
Is CSS button code generator free easy tool that allows you create beautiful and elegant CSS web buttons in few clicks
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Nextsense XML Signing Component
Signing XML document.
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.