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Data Conversion

JSON to NDJSON Converter

Convert JSON arrays into newline-delimited JSON (NDJSON/JSON Lines) format. NDJSON is the standard for streaming JSON data, log files, and tools like BigQuery, Elasticsearch, and jq.

100% Client-SideNo RegistrationFree Forever
Characters: 0Lines: 0Nodes: 0Depth: 0

Input JSON

Output (ndjson)

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JSON Formatter

JSON Converter

About This Tool

Convert JSON arrays into newline-delimited JSON (NDJSON/JSON Lines) format. NDJSON is the standard for streaming JSON data, log files, and tools like BigQuery, Elasticsearch, and jq.

100% Browser-BasedNo Data UploadsPrivacy-First

Frequently Asked Questions

What is NDJSON?
NDJSON (Newline Delimited JSON), also called JSON Lines (.jsonl), places one JSON object per line. It's ideal for streaming, logging, and processing large datasets line by line.
Is my data private?
Yes. The conversion runs entirely in your browser with no server uploads.
Where is NDJSON used?
NDJSON is used by BigQuery, Elasticsearch, MongoDB imports, structured logging, and many data pipeline tools.
Can I download the result?
Yes. Download the output as an .ndjson file.

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