What is JSONLines format?

JSONLines (JSONL/NDJSON) is a format where each line is a valid JSON object, separated by newlines.

It's ideal for streaming data, log files, and processing large datasets line by line.

What input is required?

A JSON array of objects. Each object becomes one line in the output.

Convert JSON array to JSONLines (NDJSON) format

JSON Input (array)

JSONLines Output

Enter a JSON array of objects.

Click Convert to transform to JSONLines.

Each array item becomes a separate line.

Copy the JSONLines output.

Create log files with one JSON object per line.

Prepare data for streaming processing.

Convert for Hadoop, Spark, or similar tools.

Generate streaming API response format.