JSONL Parser

Parse NDJSON / JSONL and infer a schema — field types, coverage, and sample values across every record. Runs entirely in your browser.

Input JSONL

Drop a .jsonl/.ndjson file here, or click to browse

Inferred schema

Paste or load JSONL above to analyze the schema.

Each non-blank line is parsed as its own JSON value. Nested object keys are flattened to dotted paths (e.g. address.city); arrays are reported as type array. Nothing leaves your machine.