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Code Linters and Formatters for Web Developers

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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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