Fifty (plus) applications, chrome extensions, web apps, and everything in between that will hopefully come in handy at some point in your programming life. I will keep updated as new tools are discovered. Please feel free to add to the comments anything you find.
A free browser extension that helps you identify technologies used on any website at the click of a button.
The browser for developers. Stop wasting time and speed up your development workflow
LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster.
Sentry's application monitoring platform helps every developer
diagnose, fix, and optimize the performance of their code.
"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.
An opinionated code formatter, Supports many languages,Integrates with most editors,Has few options.
Goodbye to "Inspect Element" — Check the CSS of any element you hover over, instantly, and copy its entire rules with a single click.
Find the cost of adding a npm package to your bundle
Fast, easy and reliable testing for anything that runs in a browser.
Free PCRE-based regular expression debugger with real time explanation, error detection and highlighting.
Clear your cache and browsing data with a single click of a button.
Resize the browser window to emulate various screen resolutions.
Wappalyzer is a utility that uncovers the technologies used on websites. It detects content management systems, ecommerce platforms, web frameworks, server software, analytics tools and many more
The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.
The Standard in Accessibility Testing. Chosen by Microsoft, Google, development and testing teams everywhere, axe is the World’s leading digital accessibility toolkit.
Git Graph extension for Visual Studio Code. View a Git Graph of your repository, and easily perform Git actions from the graph. Configurable to look the way you want!
Quickly check and adjust contrast in realtime in your browser to meet WCAG 2.1 requirements.
Browser extension that enhances GitHub code review and exploration.
Web alternative to Postman - Helps you create requests faster, saving precious time on development
Develop responsive web apps 5x faster! A must-have DevTool for all Front-End developers that will make your job easier.
Deliver exceptional experiences by letting our easy-to-use, intelligent software pinpoint when, where, and how user struggle is affecting your revenue and retention
Create useful .gitignore files for your project
A web application to view npm package files.
Transform between CSS, JS Objects and JSX props.
A simple page that shows all the different characters and their HTML code.
This is a tool to help you find Unicode characters. Finding a specific character whose name you don't know is cumbersome. On shapecatcher.com, all you need to know is the shape of the character!
Don't wait for the backend to be ready, generate custom API responses with Mocky and start working on your application straightaway
Write down a command-line to see the help text that matches each argument
Convert your images to Base64
When sharing content on Facebook and other social networks, clickattractivity is really important. An optimized preview tailored to the target group leads to significant improvements in the Click Trough Rate. Opengraphcheck.com will help you do the job best. And the most awesome thing is the Open Graph Check is for free!
Brotli. Next Level. Compression. Ready?
Easily generate the optimal responsive image dimensions
Real-world server response (Time to First Byte) latencies, as experienced by real-world users navigating the web.
Check My Links is a link checker that crawls through your webpage and looks for broken links.
Encode or Decode JWTs
Legendary Git client for Windows, Mac & Linux. Free for open source
When it comes to finding the right class name, it can quickly drive you to despair. Even the most experienced CSS developers don't always find the right class name right away. This tool aims to help you to not get lost in the BEM cosmos by giving you naming-suggestions for some of the most common web components.
You can set the numbers, and units of your columns and rows, and I'll generate a CSS grid for you! Drag within the boxes to create divs placed within the grid.
A comparison of screen sizes in device-independent pixel
Who can use this color combination?
Tell this magic CORS machine what you want, and it'll tell you exactly what to do.
Extract CSS from HTML
With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!
Automatically identify and fix security issues and vulnerabilities in your code before it hits to production.
YAML Checker provides a quick and easy way to validate YAML. As you type, your YAML will be validated with beautiful syntax highlighting and error information.
All the tools you need to build amazing responsive, accessible and fast websites and apps in a single standalone browser.
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