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Data · FREE LOCAL TOOL

Format and validate JSON locally

Turn dense or inconsistent JSON into readable, two-space-indented output. Invalid input is stopped with a clear error instead of producing a misleading result.

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Data

JSON formatter

Validate and make JSON readable.

Runs on this device
🔒 Everything is processed in this tab and is never uploaded.

HOW TO USE IT

Three steps. No detour.

  1. 01

    Paste a JSON object or array.

  2. 02

    Run the formatter to validate its structure.

  3. 03

    Copy or download the readable JSON result.