.JSONL File Extension

JSON Lines File

Developer Ian Ward
3.3  |  25 Votes

What is a JSONL file?

A JSONL file is a JSON file created in the JSON Lines format. It contains plain text used to describe structured data. JSONL files are used primarily to stream structured data that should be processed one record at a time.

More Information

JSON Lines is a JSON variant that allows developers to store structured data entries within one line of text, allowing the data to be streamed using protocols like TCP or UNIX Pipes. According to the format's website (jsonlines.org), JSON Lines works well with UNIX-style text processing tools and shell pipelines, is a great format for log files, and is a flexible format for passing messages between cooperating processes. JSONL files are similar to .NDJSON files.

How to open a JSONL file

Because JSONL files are plain text files, you can open them in any text editor, including:

You can also open a JSONL file in the Google Chrome and Mozilla Firefox web browsers by dragging and dropping the file into your browser window.

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Programs that open JSONL files

Included with OS
Included with OS

Verified by FileInfo.com

The FileInfo.com team has independently researched the JSON Lines file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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