JSON Formatter
Format and indent messy or minified JSON.
Minified or messy JSON
Formatted JSON
Runs entirely in your browser — nothing here is uploaded anywhere.
How it works
- Paste your JSON into the input box.
- It's parsed and re-printed with 2-space indentation.
- Copy the formatted result.
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Download PDF Go for Mac — free →Frequently asked questions
Is this JSON formatter free?
Yes, completely free with no usage limit — it runs entirely in your browser.
Does my JSON get uploaded anywhere?
No. Parsing and formatting both happen locally in your browser using JavaScript's built-in JSON parser — nothing is sent to any server.
What happens if my JSON is invalid?
You'll see an error describing what's wrong (e.g. a missing comma or unclosed bracket) instead of a formatted result.