JSON to TypeScript types
Infer TypeScript types from a JSON example, including nested arrays and objects.
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How to use this tool
- Paste representative JSON.
- Choose a valid TypeScript name for the exported root type.
- Review inferred unions and empty-array unknowns before adopting the type.
Things to know
- Types describe the provided sample, not a validated API contract. Unsafe integer values produce bigint types and require a matching parser.
- 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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