Picture in Play
Indicates whether the `picture` element is in use on a page.
View Page Source
Get access to the page source with the click of a button
Custom Style Script
W3C Markup Validation Service
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
Edit the Page
Toggles the 'Design Mode' so that you can edit the contents of the page.
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
Right Click Validator
Right click on any webpage to validate it using the W3 NUValidator service.
The tool to overlap your website layout with a grid.
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.
Edit with Adobe Photoshop
Adds a context menu item to send image links directly to Adobe Photoshop photo editor
Useful information about your system's connection including, type, speed, and rtt.
Polypad (Open in App)
Polypad Open in App.
Check the health of a github repo with one easy step.
This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
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.
Random password generator
A simple random password generator for Opera browser
Automatically login to Basic Authentication using data based on URL regexp.
This will take the URL of the current tab and send it to PageSpeed Insights for a web performance analysis.
Scanning website for vulnerable js libraries
Browser Update Watchdog
Notifies you, whenever your browser has been automatically updated.
SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others
Open in Vivaldi
Open current page, link, or all tabs in the Vivaldi browser.
SEO Nofollow links highlighter
Highlight all nofollow links on any site you want. Excellent for SEO purposes.
Using TwicPics has never been so easy!
Click on any HTML element to get the font info in a popup!
md5 hash generator
MD5 hash generator (offline mode)
PX to REM and REM to PX
PX / REM bidirectional converter
Keep awake which prevents the OS from automatically going to sleep, dimming the screen or starting screen savers
Fast balance viewer for your affiliate networks and partner programs
Involta Short links
Short link service
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