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NDJSON to JSON

Combine newline-delimited JSON values into a formatted JSON array.

Convert in your browser · No sign-up

Ignores blank lines. Each nonblank line must be one complete JSON value; multiline JSON records are rejected.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Combine newline-delimited JSON values into a formatted JSON array.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

{"id":1}
{"id":2} → [{"id":1},{"id":2}]

Details and limitations

Text stays in your browser; it is not sent to a conversion server.

Format references

Tool page updated: