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DDevToolery

JSON Flatten

Collapse a nested document into a flat map of dot-notation paths.

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About this tool

Useful when you need every leaf value addressable by a single key — for spreadsheet exports, feature flags, or i18n bundles.

Limitations

  • Flattening is lossy in one direction: an empty object and an empty array both become an empty value.

Privacy

This page does its work in your browser. What you paste is processed by JavaScript running on your own device and is never sent to a DevToolery server — there is no server that could receive it. The page itself is a static file delivered by a CDN. See exactly what is stored.