NDJSON to JSON Array Converter
Convert newline delimited JSON, also called NDJSON or JSON Lines, into a single JSON array. Log pipelines, data exports and streaming APIs love NDJSON because each line is an independent record, but most tools and code want one array they can iterate. This converter reads your input line by line, parses each non empty line as its own JSON value, and collects them into a pretty printed array. If a line fails to parse it tells you the exact line number so you can fix the source instead of guessing. Blank lines are skipped so trailing newlines do not break the run. Paste your NDJSON, click convert, and copy the array. Everything runs locally in your browser, so the records you convert never leave your machine or get stored anywhere.
How to use NDJSON to JSON Array
- Paste your NDJSON, one JSON per line.
- Click convert to build a JSON array.
- Copy the array output.
Frequently asked questions
What is NDJSON?
NDJSON, also called JSONL, is newline delimited JSON where each line is its own complete JSON value, commonly used for logs and streaming.
How does the conversion work?
It parses each non-empty line as JSON and collects the results into a single JSON array.
What happens with a malformed line?
Bad rows are reported clearly so you can find and fix the line that failed to parse.
What is NDJSON to JSON Array?
Convert newline delimited JSON, also called NDJSON or JSON Lines, into a single JSON array. Log pipelines, data exports and streaming APIs love NDJSON because each line is an independent record, but most tools and code want one array they can iterate.
Is NDJSON to JSON Array free to use?
Yes. NDJSON to JSON Array is completely free, with no sign-up and no usage limits.
Does NDJSON to JSON Array work in a web browser?
Yes. NDJSON to JSON Array runs in any modern web browser. There is nothing to download or install.
Is my data private with NDJSON to JSON Array?
Yes. NDJSON to JSON Array runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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