File Converter

NDJSON converter Free, private, no upload.

NDJSON (also called JSON Lines) stores one JSON object per line. It is used for logs, data pipelines and bulk imports. Convert NDJSON files to JSON, YAML, TOML, XML and more, privately in your browser.

or drop files anywhere · paste with Ctrl/⌘ + V

Frequently asked questions

What is a NDJSON file?

NDJSON (also called JSON Lines) stores one JSON object per line. It is used for logs, data pipelines and bulk imports. NDJSON streams line by line, which is what log tools, BigQuery, Elasticsearch and data pipelines expect.

What can I convert NDJSON files to?

JSON, YAML, TOML, XML, CSV, TSV. Pick a target after adding your files.

Are my files uploaded to a server?

No. The conversion runs entirely in your browser using WebAssembly. Your files never leave your device, so it is safe for private photos, contracts and business data. Once the page has loaded it even works offline.

Is it free? Are there limits?

It is free, with no sign-up, no watermark and no daily limits. Because nothing is uploaded there is no upload size limit either; the only limit is your device’s memory, which matters mostly for very large videos.