Why this random JSON generator?
- Generate JSON test data without uploads (browser-only).
- Build a schema from templates or custom fields.
- Export as JSON array or NDJSON for pipelines.
- Share settings safely: URLs never include schema or generated data.
How to use (3 steps)
- Pick a template or define fields.
- Set records, output format, and RNG mode.
- Generate, preview, then copy or download.
Generate
Random JSON generator
Define fields (name/type/params), generate records, then copy or download JSON output.
FAQ
Is my data uploaded?
No. Everything runs locally in your browser.
Can I share generated JSON with a URL?
Share URLs include settings only. Use copy/download to share data.
Is seeded mode secure?
No. Seeded mode is for reproducibility only.
Why can unique generation fail?
If the value space is too small, duplicates may be unavoidable.