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Code Linters and Formatters for Web Developers

There are many online tools that help you lint or format code. This post list many of the most useful ones for HTML, CSS and JavaScript

Prettier (formatter)

https://prettier.io/playground/

ESLint (linter)

https://eslint.org/demo

JSHint (linter)

http://jshint.com/

Tools for other languages

CSS

HTML

JSON

GraphQL

General purpose (handle more than 1 single syntax)

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