JSON Lines is a convenient format for storing structured data that may be processed one record at a time.


  1. UTF-8 Encoding
  2. Each Line is a Valid JSON Value
  3. Line Separator is '\n'


  • JSON Lines files may be saved with the file extension .jsonl.
  • Stream compressors like gzip or bzip2 are recommended for saving space, resulting in .jsonl.gz or .jsonl.bz2 files.
  • MIME type may be application/jsonl