Flatten JSON leaves into an object keyed by JSON Pointer paths.
Type or paste on the left — the result updates as you type.
Preserves empty objects, empty arrays and null values. Arrays use numeric path segments. This is a path map, not a reversible schema by itself.
Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.
Tool page updated: 2026-09-27
