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JSON Output Tools

Prettifies JSON and API response data with configurable indentation, sorting, and syntax validation — fixes malformed JSON and makes nested structures readable.

100% Local Browser Native

How to Use the JSON Output Tools

1. Paste JSON

Any object, array, or streaming fragment.

2. Pick the operation

Format, validate, convert, or analyze tabs.

3. Copy the output

Use per destination requirements.

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Frequently Asked Questions

What operations does the hub include?

Format/beautify, validate, Zod schema inference, URL-param flattening, flat key-value export, JSON-LD framing, and size/structure analysis — seven tools sharing one input.

Format vs validate?

Format fixes layout; validate checks correctness. Broken JSON formats partially with errors flagged — fix flagged lines, re-run.

Which output for APIs?

Minified for transit, pretty for docs, Zod for TypeScript contracts, URL params for GET requests. Generate each from the same source paste.

Is my JSON uploaded?

No — all operations run locally in your browser. Data never leaves your device.

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Last updated October 2026