Is my JSON payload sent to any backend server?

No. All parsing, validation, formatting, and tree rendering executes completely inside your browser client JavaScript memory. Your data never leaves your computer.

Can this tool fix invalid JSON syntax?

The tool identifies exact line numbers and syntax issues (such as trailing commas, single quotes, or unescaped characters) to help you quickly repair corrupted JSON payloads.

JSON Parser & Viewer | Format, Validate, Edit & Save JSON Locally

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Custom Tool

Raw JSON Input

Formatted Tree & Output

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Save JSON File

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