Convert tools

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.

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

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

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

FAQ

NDJSON to JSON — What are the supported inputs and limits?

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

Format references

Tool page updated: