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JSON formatter and validator
Paste JSON to pretty-print it with 2 or 4 spaces, minify it, or find the exact error that makes it invalid.
Output
Result
This tool checks once. The SEO Agent works on it every day.
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Questions people ask
Why is my JSON invalid?
The usual causes are a trailing comma, single quotes instead of double quotes, or a missing quote around a key. The error message points to the spot.
Is my JSON uploaded?
No. It runs in your browser, and nothing you enter is uploaded or stored.
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