100% local — files never leave your device
Convert NDJSON to GeoJSON
Turn GeoJSON Lines (NDJSON) into GeoJSON instantly in your browser. No upload, no account, and no file ever crosses the network.
About GeoJSON Lines (NDJSON)
One GeoJSON feature per line. Streams well into BigQuery, DuckDB and Athena.
About GeoJSON
RFC 7946 FeatureCollection. The universal interchange format.
Step by step
How to convert NDJSON to GeoJSON
- 01
Drop your .ndjson file
Open the converter and drop the GeoJSON Lines (NDJSON) file — parsing happens locally in a Web Worker, so nothing is uploaded.
- 02
Choose GeoJSON as the output
Pick GeoJSON, reproject to any of 180+ coordinate systems if needed, trim attributes and preview the geometry on a map.
- 03
Download the .geojson file
Save a single file, or convert a whole batch and download everything as a ZIP. Nothing is stored after the download.
NDJSON to GeoJSON — questions
Is converting NDJSON to GeoJSON really private?
Yes. The conversion runs entirely in your browser using a Web Worker — the GeoJSON Lines (NDJSON) file is never sent to a server, so it works with confidential data and offline.
Do I need an account to convert NDJSON to GeoJSON?
No. There is no signup, no email and no install. Open the converter, drop the file and download the result.
What happens to attributes and coordinate systems?
Attributes are carried across into the GeoJSON output. You can also reproject between 180+ coordinate reference systems or add a custom proj4 definition before writing.
Need the other direction? Convert GeoJSON to NDJSON