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JSON Formatter
Formats, indents and validates JSON with precise error positions, key sorting and a…
JavaScript Formatter
Formats and indents JavaScript so minified or badly formatted code becomes readable again.
Developer
Nothing uploaded
No sign-up
Free, unlimited
Paste something on the left to see the result.
In short
JavaScript Formatter is a free online tool on inputtesthub.com that formats and indents JavaScript so minified or badly formatted code becomes readable again. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the JavaScript Formatter
- Paste your code into the input area.
- Choose the indentation and output options you want.
- Read the formatted result, then copy or download it.
About the JavaScript Formatter
The JavaScript Formatter formats and indents JavaScript so minified or badly formatted code becomes readable again. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Reading a minified bundle while debugging.
- Tidying a snippet before pasting into a codebase.
- Reviewing generated code.
Frequently asked questions
Is there a limit on how often I can use the JavaScript Formatter?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Can you see what I put into this tool?
No. The JavaScript Formatter runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
What is the JavaScript Formatter used for?
The jobs it is built for: reading a minified bundle while debugging. Tidying a snippet before pasting into a codebase. Reviewing generated code. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Can I use the JavaScript Formatter on mobile?
Yes. The page is responsive and the tool works in Chrome, Safari, Firefox, Edge and Samsung Internet on both Android and iOS. There is no app to install and nothing to sign into.
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