JSON to TypeScript Interface Generator
Generate TypeScript interfaces or types from a JSON sample
So funktioniert's
- 1Paste JSON
Drop a sample response, config, or object literal.
- 2Name the root type
Set the top-level type name (defaults to 'Root').
- 3Copy the TypeScript
Get an interface (or type alias) definition for every nested object.
Über JSON to TypeScript Interface Generator
Free online JSON to TypeScript converter. Paste a JSON sample to generate clean TypeScript interfaces or type aliases, with automatic nested-type extraction and array union inference. Runs entirely in your browser. JSON to TypeScript Interface Generator auf 712 Tools läuft komplett in deinem Browser über native JavaScript APIs - kein Server sieht je deine Daten. Das heißt: sofortige Ergebnisse, volle Privatsphäre und keine Upload-Limits.
Ob für eine Debugging-Session, einen schnellen Sanity Check oder einen Produktions-Incident - dieses Tool ist kostenlos so oft nutzbar, wie du willst. Keine Wasserzeichen, kein Signup und keine Ads im Tool selbst.
Häufige Fragen
How are arrays typed?
Element types are inferred and merged: a mixed [1, 'a'] becomes Array<number | string>.
Interface vs type?
Interfaces are extensible via declaration merging; types are more flexible with unions and mapped types. Toggle in the UI to switch.
What about optional fields?
Only the fields present in your sample are emitted. Merge multiple samples with a union type if some fields are conditionally present.
Weiterlesen
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JSON to TypeScript: workflows that scale beyond a single sample
A one-shot JSON → interface tool is great for demos and dead for production. Here are the patterns real teams use to keep types in sync with real APIs.
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