Developer Utility
JSON ↔ JSONL Converter
Instantly convert between standard JSON arrays and New-line Delimited JSON (JSONL/NDJSON).100% Client-Side. Your data never leaves your browser.
Developer Utility
Format Conversion
Toggle between standard JSON arrays and JSON Lines (NDJSON) for streaming APIs or logging. Solves the syntax mismatch instantly.
- Array to Line-delimited
- Line-delimited to Array
- Syntax validation
Need structural transformation?
Changing format is just step one. To flatten nested objects, reshape arrays, or map complex JSON to tabular structures for import, you need a dedicated transformation engine.
Client-Side Processing ArchitectureSecure
Your data never leaves your device. All processing happens locally in your browser's memory via WebAssembly/JavaScript. This ensures complete data sovereignty and compliance with GDPR, HIPAA, and SOC2 standards as no files are uploaded to our servers.
Frequently Asked Questions
What is JSONL?▼
JSONL (JSON Lines) is a format where each line in a file is a valid, independent JSON object. It is standard for logging, data streaming, and large-scale data processing because it can be read one line at a time.
Can I convert JSONL back to JSON?▼
Yes. This tool allows two-way conversion. You can turn a standard JSON Array into JSONL, or take a JSONL file and wrap it into a standard JSON Array.
Is my JSON data secure?▼
Yes. Like all our tools, the conversion happens 100% client-side in your browser. No data is uploaded.
The visual data transformation platform that lets implementation teams deliver faster, without writing code.
Start mappingNewsletter
Get the latest updates on product features and implementation best practices.