How to use: JavaScript Beautifier

JavaScript Beautifier is a free online JavaScript Tools tool that re-indent compact JavaScript for readability instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

Input JavaScript Beautifier Output Runs 100% in your browser — your data never leaves your device.
JavaScript Beautifier — Input → Output. Runs 100% in your browser — your data never leaves your device.

How to use

Using JavaScript Beautifier takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.
How to use · JavaScript Beautifier 1 Input Paste your data intothe input box (or loadthe example). 2 Options Configure the optionsto match your targetformat or scenario. 3 Output Copy, download orinspect the output —it updates live as youtype.
How to use — 3

Description

Re-indent compact JavaScript for readability.

Because everything is computed client-side, JavaScript Beautifier is safe to use with sensitive data such as API keys, tokens or private logs.

Run

These ready-made examples show typical inputs and the exact output JavaScript Beautifier produces for them.

Examples

Re-indented JS.

function f(a){if(a){return a*2}return 0}

Use cases

Common situations where JavaScript Beautifier helps:

  • Re-indent compact JavaScript for readability.
  • Because everything is computed client-side, JavaScript Beautifier is safe to use with sensitive data such as API keys, tokens or private logs.

FAQ

What is JavaScript Beautifier?

JavaScript Beautifier re-indent compact JavaScript for readability. It runs entirely in your browser, so your data stays private.

Is JavaScript Beautifier free to use?

Yes. JavaScript Beautifier is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

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JavaScript Beautifier → · JavaScript Tools →