FHIR NDJSON Checker
Validates a FHIR bulk-export NDJSON file line by line and counts resources by type.
Clinical safety notice: Zero real patient data (PHI/PII) may be entered into this browser utility. Use synthetic test payloads only. Local-first deterministic processing; nothing leaves your browser.
How it works
Standard: HL7 FHIR Bulk Data NDJSON (application/fhir+ndjson)
Formula: One JSON resource per line; count per resourceType
Checks: Invalid JSON lines with line numbers; lines without a resourceType; resources without an id
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.