GEDCOM health check
Find common family tree data problems before you import, merge, or archive a GEDCOM file. Nothing is uploaded.
Check a GEDCOM file
Choose a .ged file exported by your family tree software.
The file and every person in it stay on this device.
Choose a .ged file exported by your family tree software.
Checking family records on this device…
GEDCOM health score
- People
- Families
- Issues found
Items to review
No common data problems were found. Keep the original file as a backup.
Additional issues are included in the downloaded report.
Review problems without changing the original
Export a GEDCOM copy
Export a fresh UTF-8 GEDCOM file from the family tree service or desktop program you already use.
Run the private check
The browser parses people, families, dates, and record references locally.
Review and correct at the source
Download the report, verify each warning, and make corrections in the software that owns your main tree.
What this GEDCOM checker reviews
- Death before birth and lifespans over 120 years.
- Parents recorded at unusually young or old ages.
- Possible duplicates using normalized name and birth year.
- People with no parent, spouse, or child connection.
- Missing birth dates, broken record references, and ANSEL encoding.
GEDCOM checker questions
Is my GEDCOM file uploaded?
No. Parsing and checks run in your browser. The file is released when you remove it, refresh, or close the page.
Does the tool modify my family tree?
No. It creates a review report and never changes the selected file. Correct verified issues in your source genealogy software.
Can every warning be trusted automatically?
No. Historical records contain uncertainty, adoption, calendar differences, and exceptional ages. Treat warnings as items to verify, not facts to overwrite.