Capture a screenshot of your current page in entirety and reliably—without requesting any extra permissions!

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies

Tag Assistant helps to troubleshoot installation of various Google tags including Google Analytics, Google Tag Manager and more.

The easiest way to identify fonts on web pages.

A zoomed eyedropper & color chooser tool that allows you to select color values from webpages and more.

Clear your cache and browsing data with a single click of a button.

MozBar from Moz

Resize the browser window to emulate various screen resolutions.

SEOquake is a free plugin that provides you with key SEO metrics, along with other useful tools such as SEO Audit and many others

See website traffic and key metrics for any website, including engagement rate, traffic ranking, keyword ranking and traffic source.

The Official Alexa Traffic Rank Extension, providing Alexa Traffic Rank and site Information when clicked.

Visually interact with REST, SOAP and HTTP APIs.

Lighthouse

Prints useful information to the JavaScript console by enabling the debug version of the Google Analytics Javascript.

The freshest links about design and interactive, from around the web. A designer's must!

This extension helps develop your websites with pixel perfect accuracy!

Discover what runs a website. Frameworks, Analytics Tools, Wordpress Plugins, Fonts - you name it.

Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.

Useful to inspect the meta data found inside web pages, usually not visible while browsing.

A tool for designers to measure screen dimensions

Chrome Extension to modify HTTP requests (Setup Redirects, Run Custom Javascript, Modify Headers)

A Beautiful Color Palette With Every New Tab!

Create grids and measure their distance easily.

Open source browser design tools

Creates a color palette from any image. Just right-click on the image and select the “Palette Creator” option.

Record Selenium and HTTP traffic to create a load and functional tests in less than 10 minutes (Apache JMeter Compatible).

The all-in-one redirect path analyzer. HTTP Headers, Rel-Canonicals, robots.txt, link power, trust and risk analyzed, too!

WebRank SEO provides Alexa Rank, Website Security, Server Location, Whois Lookup, Pages Indexed and Backlinks in Google & Bing

Provides enhanced functionality for using the Webflow responsive website designer.

Blazing fast & offline playground for your web experiments

Fast and easy way to test your responsive design in multiple viewports

The Easiest Way to find all broken links (404 errors) on the web page. Find more! Save more!

A new way to navigate your tabs. Easily access most used tabs, associated tabs, and closed tabs. Allows tab locking too.

Detects active WordPress theme being used on current WordPress website.

Run a heuristic evaluation on your website

Replace your new tab with the latest trending dev news!

BugHerd is a visual feedback tool for websites

This extension shows how people will see your site in the most popular social networks

Report visual bugs directly into your favorite tools, without leaving your website or web app

Write custom CSS for any website and see your changes in real time. Sync to any desktop where you are signed in to Chrome.