Free online JSON to NDJSON converter. Split JSON arrays into newline-delimited JSON (one object per line). Ideal for streaming and log files. Runs locally in your browser.
100% Local
How to Use the JSON to NDJSON
Paste a JSON array into the input box. Click Convert to NDJSON and each element is serialized on its own line as compact JSON, separated by newlines. Use Clear to reset.
How the output is structured
Each array element becomes one line of compact JSON
Lines are separated by a single newline character
No surrounding brackets — pure NDJSON format
Single objects are treated as single-element arrays
Features
Compact minified output per line — minimal file size
Ideal for log files, streaming and batch processing
Reversible with the JSON Lines to JSON tool
All processing runs locally in your browser. Your data is not uploaded to any server.