Convert NDJSON to a JSON array

Turn one-JSON-value-per-line input into an indented JSON array.

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ToolNDJSON Parser
Input
Output
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How it works

Input is split at newline boundaries, each non-empty line is parsed independently, and successful values are emitted in one array. Empty and malformed lines can be skipped or reported using the selected options.

  • Skipping empty lines matches common JSON Lines streams.
  • Two-space indentation keeps the array readable without changing values.

Worked example

User records from NDJSON log lines
Parse newline-delimited JSON lines into a JSON array
Input
											{"id":1,"name":"Alice"}
{"id":2,"name":"Bob"}
Output
												ID  Name
--  -----
1   Alice
2   Bob

When to use this

Streaming logs, BigQuery JSONL imports, and Unix event pipelines use newline-delimited records.

Edge cases

  • A pretty-printed multi-line object is not one NDJSON record and fails line-by-line parsing.
  • An empty line is ignored by default but becomes an error when skipping is disabled.
  • A malformed record stops processing unless invalid-line skipping records its line number.

References