Alchemize

• Code
• HTML
• JavaScript

Minify, pretty print & view code or JSON snippets.

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AST explorer

• Code
• JavaScript

Explore the ASTs generated by various parsers

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BaseWatch

• CSS
• HTML
• JavaScript

Stay up-to-date with baseline and browser updates.

bundlejs

• JavaScript
• npm

Analyze JavaScript packages.

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Bundlephobia

• JavaScript
• Performance
• npm

Find the cost of adding a npm package to your bundle

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Can I Use

• CSS
• HTML
• JavaScript

Quickly look up browser support for modern web technologies

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Code Generator for HTTP Requests

• Network
• Command line
• JavaScript

Generate "ready to run" code snippets for making HTTP requests with Google Apps Script, JavaScript, Node.js and cURL commands.

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Create App

• JavaScript

Create configuration files for your frontend project.

CSS2JS

• CSS
• Data transformation
• JavaScript

Transform between CSS, JS Objects and React props.

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Does it mutate?

• JavaScript

Get a comprehensive list of JavaScript array methods describing whether a given method mutates the original array or not.

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ESBench

• JavaScript
• Performance

Create shareable JavaScript benchmarks

Javascript Obfuscator

• JavaScript

Convert vanilla JS to obfuscated one, making it hard to copy, modify, understand or reuse (for others).

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JSON to Zod Schema

• Data transformation
• JSON
• JavaScript

Generate Zod validation schemas from JSON objects for runtime type safety

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Key codes

• JavaScript

Get key codes for keyboard events in JavaScript

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key.js

• JavaScript

Press any key to get the JavaScript keydown event key, code, which and keyCode properties

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npmpackage.info

• JavaScript
• npm

Access npm package information such as downalods, GitHub activity or bundlesize.

npmview

• JavaScript
• npm

View npm package files

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Operator Lookup

• JavaScript

Learn more about JavaScript operators

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pkg-size

• JavaScript
• npm
• Performance

Find the true size of an npm package.

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publint

• JavaScript
• npm

Lint npm packages for packaging errors.

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RunJS

• JavaScript

Write and run code with instant feedback.

slice/substring/substr comparison

• JavaScript

Select part of text and get example call from 3 different string manipulation methods.

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Source Map Visualization

• JavaScript

Visualize and debug source map data.

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Style Object to Custom Properties Converter

• CSS
• JavaScript

Convert a JavaScript Style Object to CSS Custom Properties (CSS Variables)

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SVG 2 JSX

• JavaScript
• SVG

Transform SVG into valid JSX

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SVGR

• JavaScript
• SVG

Transform SVGs into React components.

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Testing Playground

• JavaScript
• Misc

Playground for Testing-Library

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tooling.report

• JavaScript

Determine the best build tool for your next web project

Underdash

• JavaScript

Collection of JS snippets for Array and Iterator manipulation

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