About this utility
How to use JSON Schema Generator
Infer a draft-aware JSON Schema from a representative JSON value.
What to provide
Use a sample that includes every field and value shape you need represented.
- Paste, type, or drag and drop a supported text file into the input area.
- Choose the options that match your intended result.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
What the result means
Produces a bounded, inspectable json schema generator result locally.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- One sample cannot reveal optional fields, complete unions, formats, numeric bounds, or production invariants.
Try the included example
Select “Load example” at any time to restore this tested sample.
{"id":42,"name":"Ada","roles":["admin"],"active":true}