JSON Formatter & Validator
Beautify or minify JSON and validate it instantly — privately in your browser.
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- Paste your JSON.
- Click Pretty to indent it or Minify to compact it.
- A green check means it's valid; errors show the problem.
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FAQ
Is my JSON uploaded?
No — formatting and validation happen entirely in your browser.
Why is my JSON invalid?
Common causes are trailing commas, single quotes or missing brackets; the error message points to the spot.
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