The top 25 most used Chrome extension in Developer Tools category

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#1, GoFullPage - Full Page Screen Capture

https://gofullpage.com

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

4.89 (76,760)

8,000,000+

#2, ColorZilla

https://colorzilla.com

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

4.59 (3,843)

4,000,000+

#3, JSON Formatter

https://callumlocke.com

Makes JSON easy to read. Open source.

4.59 (1,855)

2,000,000+

#4, User-Agent Switcher for Chrome

cbe-cws-admins

Spoofs & Mimics User-Agent strings.

3.87 (2,630)

1,000,000+

#5, Lighthouse

https://developers.google.com/web

Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.

4.44 (318)

1,000,000+

#6, Similarweb - Website Traffic & SEO Checker

https://www.similarweb.com

Instant website analysis and SEO metrics at your fingertips.

4.64 (3,226)

1,000,000+

#7, SEOquake

https://www.seoquake.com

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

4.56 (2,528)

1,000,000+

#8, Clear Cache

https://clearcache.io

Powerful, user-friendly browser data management, right from your toolbar.

4.47 (1,122)

1,000,000+

#9, Selenium IDE

https://seleniumhq.org

Selenium Record and Playback tool for ease of getting acquainted with Selenium WebDriver.

3.46 (286)

800,000+

#10, Postman Interceptor

https://postman.com

Capture requests from any website and send them to Postman Client.

4.30 (955)

800,000+

#11, ModHeader - Modify HTTP headers

https://modheader.com

Modify HTTP request headers, response headers, and redirect URLs

3.15 (1,061)

800,000+

#12, Stylus

stylus.openstyles

Redesign the web with Stylus, a user styles manager. Stylus allows you to easily install themes and skins for many popular sites.

4.53 (1,099)

700,000+

#13, CSS Peeper

CSS Peeper

Extract CSS and build beautiful styleguides.

4.63 (359)

500,000+

#14, daily.dev | The homepage developers deserve

https://daily.dev

Get one personalized feed for all the knowledge you need as a developer.

4.84 (2,438)

400,000+

#15, WhatRuns

https://www.whatruns.com

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

3.78 (398)

400,000+

#16, Color Picker for Chrome™

https://autocolorpicker.com

HEX, RGB Color picker, Advanched Eyedropper, Find color code on any page

3.92 (115)

400,000+

#17, BuiltWith Technology Profiler

https://builtwith.com

Find out what the website you are visiting is built with using this extension.

4.36 (404)

300,000+

#18, SelectorsHub - XPath Helper

https://selectorshub.com

XPath plugin to auto generate, write and verify xpath & cssSelector.

4.84 (1,383)

300,000+

#19, Fake Filler

https://fakefiller.com

A form filler that fills all inputs on a page with fake/dummy data.

4.42 (749)

300,000+

#20, Detailed SEO Extension

https://detailed.com

Get SEO insights at the click of a button to any website you're currently on. Built by full-time SEO's for daily analysis.

4.95 (191)

300,000+

#21, Responsive Viewer

https://responsiveviewer.org

Show multiple screens once, Responsive design tester

4.26 (294)

200,000+

#22, Grepper

https://grepper.com

The Query & Answer System for the Coder Community

4.43 (405)

200,000+

#23, JSON Viewer Pro

Rahul Baruri

A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. ✅…

4.75 (134)

200,000+

#24, Color Tab

https://colorhunt.co

A beautiful color palette with every new tab!

4.25 (1,394)

200,000+

#25, META SEO inspector

https://www.omiod.com

This extension is primarily aimed at web developers who need to verify the HTML of their sites to ensure compliance with Google's…

4.36 (592)

200,000+