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JSON Lines Inspector
Inspect JSONL / NDJSON record by record while preserving valid source lines for export.
This is a structural profiler, not a schema validator. Shape summaries use bounded samples and may omit high-cardinality or deeply nested paths.
Input
A single leading UTF-8 BOM is removed. Comments are not JSON and are only ignored when explicitly selected.
Filter valid records
Summary
Add JSON Lines to begin.
Valid record preview
| Line | Shape | UTF-8 bytes | Preview |
|---|
Nested path profile
Presence and each observed type are counted at most once per record. Array items use []. Samples are display-only and bounded.
| Path | Present | Observed types | Samples |
|---|
Line errors
| Line | UTF-8 bytes | Error | Preview |
|---|
Export
Valid-only export uses the original valid source lines, preserving numeric spellings such as 1e3 rather than reserializing parsed numbers. Error CSV neutralizes spreadsheet-formula prefixes.