How to use it
Paste JSON and click Format to pretty-print it, Minify to compact it, Sort keys to alphabetise every object, or Validate to just check it. Errors show the line and column.
Common JSON mistakes
Trailing commas, single quotes, unquoted keys and comments are all invalid in strict JSON.
Frequently asked questions
Is my data sent anywhere?
No. JSON is parsed in your browser, so it's safe for private data.
Why does large JSON lose precision?
JavaScript parses numbers as 64-bit floats, so integers above 2^53 may be rounded. Keep such IDs as strings.
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