JSON Mock Generator — Tinker
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JSON Mock Generator
Build schemas · generate realistic fake data · export in any format
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Template
Fields
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JSON Schema
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// schema will appear here
Import Schema / JSON
Parse ↵
JSON
CSV
NDJSON
SQL
TS Types
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⊞ Pretty
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✓ Validate
{ }
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Generation Settings
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Records
Locale
English (en)
English US
English UK
French
German
Spanish
Portuguese BR
Italian
Japanese
Chinese CN
Korean
Arabic
Hindi
Russian
Seed (optional)
Root wrapper
Array [ ]
Object { data: [] }
Paginated
None (first record)
Null chance %
ID format
UUID v4
NanoID
Integer (1…)
MongoDB ObjectId
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