Hello KeyboardTools
Code tool

JavaScript Beautifier

Paste JavaScript and format it locally without uploading your source.

In-browser processingNo account requiredPrivacy details ↗

A QUICK WALKTHROUGH

How to use this tool

  1. Paste JavaScript.
  2. Choose an indentation size.
  3. Copy the formatted result.

Conservative formatting

This lightweight formatter adjusts whitespace, braces, and common semicolons; it does not execute or transpile code.

GOOD TO KNOW

Common questions

Is my code uploaded?

No, formatting runs in your browser.

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JSON Formatter

Number and string tokens (including escapes and lone surrogates) stay verbatim. Duplicate keys stay present. Sorting compares decoded keys by UTF-16 order, keeping duplicate order stable. Positions use 1-based UTF-16 units. Validate mode keeps original whitespace and ignores sorting. UTF-8 byte counts and JSON/TXT exports replace literal lone surrogates with U+FFFD; escaped surrogate tokens remain unchanged. Processing stays in this browser. Nothing is uploaded.

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HTML Formatter

Format, prettify, or compact HTML locally in your browser with safe parsing, readable indentation, and copy or download output.

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CSS Minifier

Minify CSS in your browser by removing comments and unnecessary whitespace while preserving strings and declarations.