JSON Lines Viewer / NDJSON Viewer
Options
Lines
Valid objects
Invalid lines
NDJSON table preview will appear here.
What is a JSON Lines / NDJSON Viewer?
A JSON Lines viewer helps you inspect newline-delimited JSON where each line contains a separate JSON object.
It is useful for logs, exports, event streams, API dumps, analytics files, and converting NDJSON into a standard JSON array.
How to use the NDJSON Viewer
- Paste JSON Lines or NDJSON into the input field.
- Choose whether to skip empty lines and pretty-print the output.
- Click Parse NDJSON.
- Review the table view and copy the JSON array if needed.
Tips
- Each line in NDJSON should be valid JSON on its own.
- Skipping empty lines helps when logs contain blank separators.
- The JSON array output is useful when another tool expects standard JSON instead of NDJSON.
- Invalid line numbers make debugging broken exports much easier.
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NDJSON Viewer FAQ
Can this tool parse JSON Lines and NDJSON?
Yes. It supports newline-delimited JSON where each line contains one JSON object or value.
Can it show NDJSON as a table?
Yes. Parsed objects are displayed in a table using discovered keys as columns.
Can I convert NDJSON to a JSON array?
Yes. The tool generates a JSON array output from valid lines.
Is my data stored?
No. Everything runs directly in your browser.