DATA & APIS

JSON Lines (JSONL) Validator online

Paste JSONL or NDJSON data to count valid records and pinpoint lines with errors.

Local processing

LOCAL PROCESSING

Everything happens in your browser

The file and text never leave your device.

InputResult

Paste one JSON object per line. Empty lines are ignored.

What you can do with JSON Lines (JSONL) Validator

Validate one independent JSON value per line. Use the tool controls to adjust the operation and review the result before copying or downloading it.

How it works and what to consider

Every non-empty line must be valid JSON on its own; records are not combined or corrected automatically.

FREQUENTLY ASKED QUESTIONS

What result does JSON Lines (JSONL) Validator provide?

Validate one independent JSON value per line. Every non-empty line must be valid JSON on its own; records are not combined or corrected automatically.

Where is the information for JSON Lines (JSONL) Validator processed?

The operation runs locally in your browser. PriviTools does not receive the tool input, file or result.