Do I get free credits to try JSON to JSON Schema?

Yes — new accounts get 3 free credits to spend on any tool, JSON to JSON Schema included. After that you only pay for what you run.

How many credits does JSON to JSON Schema cost?

Everything runs in your browser and nothing is uploaded: free accounts pay 1 credit per run, and Pro or Pro+ members run it as often as they like.

Is the content I paste private?

JSON to JSON Schema uses your input only to generate the result. Stored results are deleted automatically by our retention policy, and you can remove any run from your history.

Do I need to install anything?

No. JSON to JSON Schema works in any modern browser — nothing to download or install.

JSON to JSON Schema

Turn a sample JSON value into a JSON Schema (draft 2020-12 subset) you can use for structured output or function calling.

Sample JSON

Paste one example of the JSON you expect. The schema is inferred from this single sample and may need small tweaks.

Options

Detect string formats (date, email, uri…)Mark all keys as requiredDisallow extra properties (additionalProperties: false)

No schema yet

Paste a valid JSON sample above, then press “Generate schema”.

Inferred from a single sample: everything is required, empty arrays get a generic item, and mixed-type arrays list every type. Review and adjust before shipping.

Runs entirely in your browser. Your JSON is never uploaded.

How it works

This utility runs locally in your browser for privacy and speed.

1 ⚡

Unlimited local tools

This run costs 1 credit(s) and is saved to your history automatically.

My usage history

No runs recorded yet.

Frequently asked questions

Do I get free credits to try JSON to JSON Schema?: Yes — new accounts get 3 free credits to spend on any tool, JSON to JSON Schema included. After that you only pay for what you run.
How many credits does JSON to JSON Schema cost?: Everything runs in your browser and nothing is uploaded: free accounts pay 1 credit per run, and Pro or Pro+ members run it as often as they like.
Is the content I paste private?: JSON to JSON Schema uses your input only to generate the result. Stored results are deleted automatically by our retention policy, and you can remove any run from your history.
Do I need to install anything?: No. JSON to JSON Schema works in any modern browser — nothing to download or install.

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