Nested JSON Generator
Generates a small sample JSON object with one level of nesting (an object inside an object) — for API-mockup or documentation examples that need more structure than a flat object.
What this generator does
Produces a JSON object with nested structure, for exercising code paths that flat sample data never reaches — recursive rendering, deep property access, and depth-limited serialisers.
How to use this tool
- Press generate for a nested JSON sample.
Worked examples
- Use
- Testing a tree component, a deep-merge function or a JSON viewer
Common use cases
- API documentation examples needing nested structure
- Placeholder data for mockups
- Testing JSON-parsing code
How this generator works
A JSON document is built to a depth and breadth you choose, mixing objects, arrays and the four scalar types, and every document produced is parsed back before it is shown. That round trip is the check that matters: a generator that assembles JSON by string concatenation will eventually produce something that does not parse, and the failure is silent until whatever consumes it falls over.
Limitations and good to know
- Structure only — the keys and values are shaped like data, not modelled on anything real.
- Depth is capped because deeply nested JSON breaks parsers rather than testing them; many refuse beyond a few hundred levels.
- No schema is produced alongside it, so this exercises a parser rather than a validator.