Dig Into Your Family History
GEDminer is a free, in-browser GEDCOM analyser. Upload your family tree to uncover demographics, map ancestor locations, calculate kinship, find data gaps, and plan your next research steps. Your file is processed locally and never uploaded.
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Explore your tree
Statistics & Overview
Interactive charts showing demographics, life expectancy and family size across your tree.
Locations
Map your ancestors across regions with frequency analysis and migration patterns.
People Directory
Searchable list of every person in your tree with quality and date filters.
Kinship Explorer
Calculate relationships, find cousins, and explore Shared DNA matches.
Discovery
Migration analysis, Census Toolbox and research planning to guide your next steps.
Integrity
Detect duplicate records, impossible dates and data consistency issues.
Solve a specific problem
Free GEDCOM Analyzer
Upload a .ged file and get instant analysis: errors, duplicates, missing dates, migration maps, census gaps and a data quality score. 100% in-browser, no signup required.
Find and Fix Family Tree Errors Automatically
Detect impossible dates, duplicate ancestors, missing parents and broken relationships in your family tree in seconds. Free, browser-based GEDCOM error checker.
Find Missing Ancestors in Your Family Tree
Uncover missing ancestors, hidden cousins, and unrecorded generations in your family tree. Free analyzer that pinpoints exactly where your research has gaps.
Clean Up Your Family Tree
Tidy up an inherited or messy family tree: merge duplicates, standardise place names, fix encoding issues and surface missing facts. Free, browser-based.
Genealogy Data Analysis
Turn your family tree into insight: birth-year charts, migration maps, surname distributions, occupation breakdowns and lifespan trends. Free GEDCOM analytics.
Free GEDCOM Validator
Validate any GEDCOM file (.ged, .gedcom) for impossible dates, broken family links, duplicates, encoding bugs and structural issues. 100% in-browser, no signup, no upload.
GEDCOM Viewer Online
Open and explore any GEDCOM file in your browser, free, no signup. View people, families, locations on a map, timelines and statistics - all parsed locally on your device.
Family Tree Data Quality
A weighted Tree Health Score - 40% completeness, 30% sourcing, 30% consistency - plus an opt-in community percentile. See exactly which gaps and contradictions are dragging your tree\'s score down.
Compare Family Trees
Compare two GEDCOM files side-by-side before merging. See differences in score, individuals, sources and structure. Free, in-browser, no upload of your private family data.
Featured genealogy guides
How to Analyse a GEDCOM File Online
A step-by-step walkthrough for uploading your GEDCOM file and getting instant insights into your family tree - demographics, errors, migration patterns, and research priorities.
Finding Hidden Cousins in Your Family Tree
Uncover possible family connections hiding in plain sight by analysing shared surnames, birth locations, and overlapping timeframes across disconnected branches.
How to Find and Fix GEDCOM Errors
A practical guide to detecting impossible dates, missing records, duplicate entries, and other data quality issues in your GEDCOM family tree file.
Finding Missing Census Records for Your Ancestors
Discover which census records your ancestors should appear in but haven\'t been found yet, and learn strategies for tracking them down.
Understanding Family Tree Connectivity and Structure
Learn what connected components are, why your tree might have isolated individuals, and how to strengthen the structural integrity of your GEDCOM file.
DNA Testing Strategy for Your Family Tree
Learn how to strategically plan DNA tests to get maximum genealogical value from your family tree research.