JSONL to JSON Converter

Convert JSON Lines format to standard JSON

How to Use

  1. 1

    Enter or paste your JSONL data

    Type or paste the JSON Lines data (one JSON object per line) into the input field.

  2. 2

    Click the 'Convert to JSON' button

    The tool will process your JSONL data and convert it to a standard JSON array.

  3. 3

    Choose formatting options (optional)

    Select whether you want the JSON output to be pretty-printed (indented) or compact.

  4. 4

    Copy or download the result

    Use the copy button to copy the JSON to your clipboard, or download it as a .json file.

Frequently Asked Questions

What is JSON Lines (JSONL) format?

JSON Lines (JSONL) is a format where each line is a valid JSON object, separated by newlines. It's designed for streaming data processing and is easier to work with for large datasets because you can process one line at a time without loading the entire file into memory.

Why would I convert JSONL to JSON?

While JSONL is great for streaming and processing large datasets line by line, standard JSON arrays are more commonly used in JavaScript applications and APIs. You might need to convert JSONL to JSON when integrating with systems that expect standard JSON format, when visualizing data, or when working with libraries that don't support JSONL directly.

How does this converter handle invalid lines?

The converter attempts to parse each line as a valid JSON object. If a line contains invalid JSON, the converter will show an error message. For best results, ensure that each line in your input is a valid JSON object.

Is there a size limit for the JSONL I can convert?

While there's no strict limit, very large JSONL files (several MB) might cause performance issues in your browser. For extremely large files, consider using a desktop application or command-line tool that can process the data in chunks.

Will the converter preserve all my data?

Yes, all valid JSON objects from your JSONL input will be preserved in the JSON array output. The only change is the format - from individual JSON objects separated by newlines to a standard JSON array containing those objects.