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JSON Formatter & Validator
Paste your JSON below to beautify, validate, or minify it. Everything runs locally in your browser — your data is never uploaded.
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What is a JSON formatter?
A JSON formatter takes minified or messy JSON and re-indents it into a clean, readable structure so you can scan nested objects and arrays at a glance. This tool also validates your JSON and points to the exact position of any syntax error.
How to use it
1. Paste your JSON into the box above. 2. Click Beautify to indent it, Minify to strip whitespace, or Validate to check for errors. 3. Click Copy to grab the result.
Is my data safe?
Yes. This formatter runs entirely in your browser using the built-in JSON.parse engine. Nothing you paste is ever sent to a server.