JSON Schema to Mock Data
Generate mock response data from JSON Schema with array strategy, batch count, Chinese content, and structure stats
JSON Schema
Generation Settings
Generation History
No history yet
Mock Data Output
Please input JSON Schema
Data Statistics
Objects
0
Arrays
0
Strings
0
Numbers
0
Booleans
0
Data Size
0 B
Schema Coverage
- Supports object, array, string, number, integer, boolean, and null base types.
- Supports enum, const, default, minimum/maximum, and minItems/maxItems constraints.
- Supports oneOf/anyOf/allOf and local $ref resolution for realistic API payload shapes.
- Supports semantic format values like email, date, date-time, uri, uuid, and ipv4.
Guide
JSON Schema to Mock Data converts schema definitions into realistic sample payloads so you can proceed with integration, demos, and tests before production APIs are ready.
What JSON Schema to Mock Data Does
It reads field types, constraints, and composition rules from your schema, then generates JSON samples that are ready for frontend rendering and API workflow validation.
Core Features
- Generates mock data from schema rules in real time as you edit input.
- Supports batch generation, array strategy control, locale switch, and one-click regeneration.
- Supports format, copy, download, structure stats, and history replay in one workflow.
- Runs fully in browser with no upload, suitable for sensitive API debugging tasks.
How To Use
- Paste your JSON Schema or load a built-in example.
- Set batch count, array strategy, null behavior, and content locale.
- Review generated output, then format, copy, or download as needed.
- Reuse history entries to compare payload results across schema changes.
Generation Rules
- Object fields follow required first, then optional fields by probability.
- Arrays support random, fixed, or empty mode with tuple and single-item schemas.
- Strings prioritize format and pattern; numbers follow min/max constraints.
- Composition handles oneOf/anyOf/allOf and local references to reduce manual work.
Use Cases
- Build API response fixtures for frontend-backend integration
- Prepare stable demo payloads for product walkthroughs
- Generate structured samples for automated testing pipelines
- Validate field planning during API contract reviews
Privacy
All schema parsing and mock generation happen locally in your browser. No input or output is uploaded by this tool.