JSON Flattener

Convert nested objects and arrays into a flat JSON object using explicit object-key and array-index paths.

Nested JSON

Flat JSON object

ReadyPaths use explicit $["object key"][0] syntax so object keys and array indexes remain distinguishable for round-tripping.

How to use this JSON Flattener

Flatten nested JSON into reversible bracket-path keys. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.