Leudachain
Font Inspector
Click on any HTML element to get the font info in a popup!
Picture in Play
Indicates whether the `picture` element is in use on a page.
PixelGrid
The tool to overlap your website layout with a grid.
Random password generator
A simple random password generator for Opera browser
Edit with Paint.Net
Adds a context menu item to send image links directly to Paint.Net photo editor
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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.
Polypad (Open in App)
Polypad Open in App.
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
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
PageSpeed Insights
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
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/
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
Octobox
Integrate Octobox directly into your GitHub workflow
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
Stethoscope
Check the health of a github repo with one easy step.
CF-Predictor
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
JxArşiv | Araçlar
Currency, Meter, Square, VAT, Percentage, Letter, Word Count, Age Calculation and Archives ...
MultiPass
Automatically login to Basic Authentication using data based on URL regexp.
Open in GIMP photo editor
Adds context menu items to send image links and image files directly to the GIMP photo editor
Colored favicons for Salesforce
Make the favicon in different color based on which salesforce instance your are loggen into.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
TwicPics Companion
Using TwicPics has never been so easy!
md5 hash generator
MD5 hash generator (offline mode)
sha1 hash generator
SHA1 hash generator (offline mode)
Involta Short links
Short link service
Octotree
GitHub on steroids
retire.js
Scanning website for vulnerable js libraries
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
Caffeine
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Network Information
Useful information about your system's connection including, type, speed, and rtt.