JavaScript Formatter
Beautify and pretty-print JavaScript with clean, consistent indentation right in your browser.
ToolsSoup's JavaScript Formatter is a free online tool that beautifies and pretty-prints JavaScript right in your browser. Paste minified, single-line, or messy code and get back clean, properly indented JavaScript with consistent spacing and line breaks. It is powered by js-beautify, a real JavaScript parser, so it understands tricky syntax — regular expressions, template literals, arrow functions, and automatic semicolon insertion — instead of naively re-indenting text. Choose your indent size and brace style, and nothing ever leaves your device.
What is a JavaScript formatter?
A JavaScript formatter — also called a JS beautifier or pretty printer — rewrites source code with consistent indentation, spacing, and line breaks so it is easy to read and maintain. It expands minified or one-line scripts onto multiple lines, indents the body of functions, loops, and conditionals, and puts spaces around operators. Developers use it to make sense of minified bundles, code copied from the browser console, and snippets pasted from the web.
How to format JavaScript online
Beautifying JavaScript with ToolsSoup takes just a few seconds:
- Paste your JavaScript into the input box on the left.
- Pick an indent size — 2 spaces, 4 spaces, or a tab.
- Choose whether opening braces stay on the same line or move to a new line.
- Click Format, then copy the clean, readable result.
Does it understand regex and template literals?
Yes. This tool uses js-beautify, a battle-tested JavaScript beautifier that tokenizes your code properly. It can tell a regular expression apart from a division operator, keeps the contents of template literals and strings intact, and respects automatic semicolon insertion. A naive line-by-line re-indenter would corrupt code in exactly these cases, which is why a real parser matters.
Is it the same as a JavaScript minifier?
No — they are opposites. A formatter adds indentation and line breaks to make code readable, while a minifier strips whitespace and shortens names to make the file as small as possible. Use the formatter while you are reading or debugging code, and a minifier when you are shipping it to production. ToolsSoup offers both as separate tools.
Is my code uploaded anywhere?
No. All formatting happens locally in your browser using JavaScript, so your source code is never sent to or stored on any server. You can format proprietary or sensitive scripts with confidence.
Why use this JavaScript formatter?
- 100% free with no ads, sign-up, or usage limits.
- Runs entirely in your browser — your code is never uploaded to a server.
- Powered by js-beautify, so regex, template literals, and ASI are handled correctly.
- Choose 2-space, 4-space, or tab indentation.
- Pick whether opening braces stay on the same line or move to a new line.
- Instantly expands minified or one-line scripts into readable code.
Frequently asked questions
Is this JavaScript formatter free?
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, or hidden limits.
Is my JavaScript safe?
Absolutely. All formatting happens locally in your browser, so your code is never sent to or stored on any server.
Will it break my regular expressions or template literals?
No. It uses js-beautify, which parses JavaScript properly, so regular expressions, template literals, and strings are preserved exactly.
Can it un-minify code?
Yes. Paste a minified or single-line script and the formatter expands it onto multiple lines with proper indentation so you can read it.
What is the difference between a formatter and a minifier?
A formatter indents code for readability, while a minifier strips whitespace to shrink the file. They do opposite jobs and ToolsSoup provides both.