JSON Schema Generator
Paste example JSON and get a draft-07 JSON Schema — types, properties and required fields inferred — ready for structured-output modes, API validation or documentation. Runs in your browser.
Runs in your browser — your file never leaves your deviceFrequently asked questions
Is JSON Schema Generator free to use?
Yes — JSON Schema Generator is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.
Are my files uploaded or stored anywhere?
No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.
Do I need to install anything or create an account?
No installation and no account needed. JSON Schema Generator works on any modern browser — Windows, Mac, Linux, Android and iPhone.
How do I use JSON Schema Generator?
Open the tool, add your file (or paste your content), adjust any options, then press “Generate schema”. Your result is ready to download in seconds.
Related tools
llms.txt Generator
Make your website legible to AI assistants.
cURL Converter
cURL → fetch, axios or Python requests.
Markdown Table Generator
CSV or Excel cells → a tidy markdown table.
SVG Optimizer
Strip editor junk & shrink SVG files safely.
PDF Inspector
See a PDF's page count, sizes and metadata.
Crop PDF
Trim the margins of every page.