JSON Tools
JSON Lines / NDJSON Tools
Validate newline-delimited JSON, convert NDJSON to a JSON array, or convert a JSON array to NDJSON. Format and download the result.
Your JSON is processed securely in your browser and is not stored unnecessarily.
How it works
- Paste JSON, type in the editor, or upload a file.
- Run the tool. Processing stays in your browser whenever possible.
- Copy or download the result. Nothing is written to server storage.
FAQ
Newline-delimited JSON (JSON Lines). Each line is a complete JSON value, commonly used for logs and streaming APIs.