JSON Mock Data Generator
newGenerate randomized mock JSON records from a sample shape.
100% Client-Side Processing • Your Data Never Leaves Your Browser
About JSON Mock Data Generator
Paste a sample JSON object and generate any number of randomized records that match its shape — string fields are filled with realistic-ish words, names, or emails based on the key name, numbers and booleans are randomized, and nested objects/arrays keep their structure.
Use it to quickly create fixture data for a UI prototype or test suite without writing it by hand. Generation happens entirely in your browser.
Key Features
Generates realistic-ish names, emails, ids, and dates by field name
Preserves the shape of nested objects and arrays
Configurable record count
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