A LITTLE ORDER, A LOT LESS WORK.
JSONL Converter
Validate line-delimited records and convert between JSONL and JSON arrays.
01 — 18Start with data. Make room for work.
Batch processing available
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ONE OPERATION, MULTIPLE FILES
Do repeated work in one pass.
Files use the options above. Up to 10 files, 2 MiB each.
Files stay on your device. Download each result independently.
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All processing happens in this browser.
How to use it
- Every line must be a valid JSON value. Blank lines and BOM are rejected; errors identify the line. A final newline is allowed.
- Export requires a JSON array. This does not validate any provider-specific training format.
Is data sent to a model?
No. These tools run locally in your browser without calling a model API.