Developer Tools / CLIENT-SIDE UTILITY
JSONL Dataset Validator
Check line-delimited JSON before using it in a data pipeline.
How to use this tool
Paste one JSON object per line. Run to identify syntax errors and non-object records.
Use it for: Check one JSON object per line before a dataset import.
What to provide & expect
- Who it helps
- Dataset editors and developers
- Your input
- JSONL text, with one object on every nonempty line.
- Your result
- Valid record count and numbered invalid lines.
- Limits to know
- This object-only dataset check does not validate business fields or a model-specific schema.
Example
Validate two event records with one JSON object per line.
Sample data only. Your inputs stay in this browser.
Private by design. Inputs are neither stored nor transmitted. Reloading clears this workspace.