Data & Formatsjson52.2K runs

JSON Formatter

Format, validate, diff and convert — locally

Pretty-print, minify, validate against a schema, convert to YAML/CSV and diff two documents. Runs entirely in your browser; payloads never leave the page.

What do you need?

Press ⌘↵ to generate. Redact secrets before pasting.

Try one of these

Output appears here

Describe your task on the left, or pick one of the examples. Output arrives with syntax highlighting, a copy button and a download.

What happens to what you paste

Prompts are processed and discarded — nothing is stored after the response.
No prompt or output becomes training data. Ever.
The JSON Formatter runs entirely in your browser; nothing is sent at all.
Redact secrets anyway — good hygiene beats good policy.

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Patterns with test cases and a plain-English breakdown

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SQL Generator

Queries, indexes and migrations from intent

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YAML Generator

Pipelines, manifests and policies — valid on first paste

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See all 17 tools

Fine-tune this on your own library

Professional and above train the generators against your reviewed scripts, so output matches your house conventions exactly.

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