Developer Tools

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GoFullPage - Full Page Screen Capture

4.9(74.8K)

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

ColorZilla

4.6(3.8K)

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

JSON Formatter

4.6(1.8K)

Makes JSON easy to read. Open source.

User-Agent Switcher for Chrome

3.9(2.6K)

Spoofs & Mimics User-Agent strings.

Redux DevTools

4.6(713)

Redux DevTools for debugging application's state changes.

Lighthouse

4.4(308)

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

Similarweb - Website Traffic & SEO Checker

4.6(3K)

Instant website analysis and SEO metrics at your fingertips.

SEOquake

4.6(2.5K)

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

Selenium IDE

3.4(269)

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

ModHeader - Modify HTTP headers

3.2(1K)

Modify HTTP request headers, response headers, and redirect URLs

Stylus

4.5(1.1K)

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

CSS Peeper

4.6(350)

Extract CSS and build beautiful styleguides.

WhatRuns

3.8(393)

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

JSON Viewer Pro

4.7(120)

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

BuiltWith Technology Profiler

4.4(403)

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

SelectorsHub

4.9(1.4K)

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

Color Picker for Chrome™

4.0(105)

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

Fake Filler

4.4(737)

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

Detailed SEO Extension

4.9(167)

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.

Grepper

4.4(396)

The Query & Answer System for the Coder Community

Responsive Viewer

4.3(274)

Show multiple screens once, Responsive design tester

Requestly - Intercept, Modify & Mock HTTP Requests

4.4(1.1K)

The easiest way to Redirect URLs, Modify HTTP Headers, Mock APIs, Inject custom JS, Modify GraphQL Requests

VisBug

4.8(244)

Open source browser design tools

Web Vitals

4.1(41)

Measure metrics for a healthy site

User JavaScript and CSS

4.8(516)

User JavaScript and CSS on any website

NoFollow

4.3(232)

Outline nofollow links, detect nofollow and noindex meta tags on webpages. Features website filtering and custom CSS outline styles.

User Agent Switcher

4.2(664)

Simplest way to switch between user-agents in your browser!

GitZip for github

4.2(166)

It can make the sub-directories and files of github repository as zip and download it

Jam

4.7(216)

The fastest bug reporting tool. Cut your bug reporting time by 20x.

Clear Cache

4.5(1.1K)

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

APK Downloader

3.2(38)

Free and safe download Android apps & games from Google Play Store.

PPSPY-#1 Shopify analytics & dropship tool

4.1(107)

PPSPY provides store analytics, shopify store sales tracker, shopify dropshipping, shopify theme & app detector and more.

Google apps