JSON records

A JSON-records file is a plain JSON array of objects, one per record, with no geometry.

File extension: .json · Read: ✓ · Write: ✓ · Geometry: none

A JSON-records file looks like this:

[
  { "id": 1, "name": "Alice", "city": "Toronto" },
  { "id": 2, "name": "Bob",   "city": "Vancouver" }
]

Format-specific input options

• json-path= — for files where the array is nested inside a larger object, e.g. json-path=data/records for {"data": {"records": [...]}}.

Format-specific output options

• ndjson — emit newline-delimited JSON instead of an array. One record per line. Often easier to process with line-oriented tools.

Practical notes

• When exporting non-tabular layers as JSON records, the geometry is dropped — you get just the attribute table as JSON.

External resources

• JSON Lines (jsonlines.org) — the spec for the newline-delimited JSON variant emitted by Mapshaper's ndjson option.