JSON formatter and validator
Validate and format JSON without rounding large integers.
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How to use this tool
- Paste a complete JSON value.
- Choose indented or compact output.
- Validation reports malformed JSON; numeric spelling is preserved.
Things to know
- Processing happens on your device. Check the result before replacing your original data.
- Each text input accepts up to 5 MiB. Output is limited to 25 MiB and combined text settings to 1 MiB.
- Structured documents accept up to 128 nesting levels and 250,000 values; query and schema modes have additional limits.
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