JSON Flattener
Flatten a nested JSON object into a single level of dot-notation keys (and unflatten it back). Perfect for configs, i18n files and CSV prep. Free, private, instant.
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All processing happens locally in your browser — nothing is uploaded.
How to Use
Paste nested JSON to flatten it into dot-notation keys. Toggle direction to unflatten.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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