JSON to JSONL Converter

Convert JSON arrays to JSONL (JSON Lines) format and vice versa. Perfect for data processing, machine learning workflows, and API development.

How to Use JSON to JSONL Converter

📝 Select Conversion Mode

Choose between JSON to JSONL or JSONL to JSON conversion mode based on your needs. Switch modes anytime with the toggle button.

ðŸ“Ī Input Your Data

Paste your JSON array or JSONL data, upload a file, or fetch JSON directly from a URL. The tool validates your input in real-time.

🔄 Convert & Preview

Click the Convert button to transform your data. View the output with syntax highlighting and formatting.

ðŸ’ū Download or Copy

Copy the converted data to clipboard or download it as a file. Perfect for integration into your workflow.

Conversion Mode:
JSON → JSONL

Load JSON from URL

Enter a URL to fetch JSON data directly from an API or endpoint

JSON Input (Array)
JSONL Output
No output yet
Enter JSON and click Convert

What is JSONL?

JSONL (JSON Lines) is a convenient format for storing structured data that can be processed one record at a time. Each line is a valid JSON object, making it ideal for streaming data processing, log files, and machine learning datasets.

Why Use JSON to JSONL Converter?

🚀 Efficient Processing

JSONL format allows for efficient line-by-line processing without loading entire datasets into memory. Perfect for big data workflows.

🔒 Privacy First

All conversions happen locally in your browser. Your data never leaves your device, ensuring complete privacy and security.

⚡ Lightning Fast

Instant conversion with no server roundtrips. Process large datasets quickly and efficiently right in your browser.

Common Use Cases

  • Preparing training data for machine learning models
  • Converting API responses for data processing pipelines
  • Fetching and converting JSON data from public APIs
  • Processing log files and event streams
  • Bulk data import/export operations
  • Data transformation for ETL workflows
  • Streaming data processing and analysis

Features

🔄 Bidirectional Conversion

Convert from JSON to JSONL or JSONL to JSON with a single click. Switch between modes instantly.

✅ Validation

Real-time validation ensures your input is correct. Get detailed error messages for debugging.

📊 Statistics

View detailed statistics about your conversion including line count and file size changes.

🌐 URL Fetching

Fetch JSON data directly from any public URL or API endpoint. Perfect for working with remote data sources.

📂 File Support

Upload JSON or JSONL files directly and download converted results. Supports drag-and-drop for convenience.

📋 Copy to Clipboard

One-click copy functionality for quick integration into your projects and workflows.

ðŸŽŊ Sample Data

Load sample data to test the converter and understand the format differences between JSON and JSONL.

Format Examples

JSON Array Format

[
  {"id": 1, "name": "Alice"},
  {"id": 2, "name": "Bob"},
  {"id": 3, "name": "Charlie"}
]

JSONL Format

{"id": 1, "name": "Alice"}
{"id": 2, "name": "Bob"}
{"id": 3, "name": "Charlie"}
Free JSON to JSONL Converter | Convert JSON Array to JSONL Format