NDJSON converter, in your browser.
Convert NDJSON (JSON Lines, JSONL, LDJSON) files to JSON, CSV, XLSX and PARQUET, or turn other files into NDJSON. Everything on this page is converted in your browser, so your files never leave your device.
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About NDJSON
NDJSON writes one complete JSON value per line, with no enclosing array or commas between records. A program can read, append or process it one line at a time without loading the whole file, which makes it popular for logs, exports and data loading. JSON Lines (.jsonl) is the same format under another name.
NDJSON is not a single valid JSON document, so ordinary JSON tools reject it. NDJSON can be streamed and appended to one record at a time.
- Stands for
- Newline-Delimited JSON
- Type
- Plain-text records
- Compression
- None
- Introduced
- The early 2010s, by no single standards body (a community convention)
- Opens in
- Text editors, jq, pandas, BigQuery and most data tools
- Best for
- Logs and large record streams that are processed line by line
- File extension
- .ndjson, .ldjson
- MIME type
- application/x-ndjson
Questions
How do I open an NDJSON file?
NDJSON opens in: Text editors, jq, pandas, BigQuery and most data tools. If your device or app cannot open it, convert it to JSON or CSV above.
What can I convert NDJSON to?
ToAny converts NDJSON to JSON, CSV, XLSX and PARQUET.
What can I convert to NDJSON?
ToAny creates NDJSON files from JSON, CSV and XLSX.
Are my files uploaded?
No. Every NDJSON conversion listed here runs inside your browser. The files stay on your device.
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