GEDCOM at heart
Built on the standard — not bolted onto it.
Most apps treat GEDCOM as an import/export chore. Here the standard is the source of truth: every record you see and edit is real, spec-compliant GEDCOM.
Full 5.5, 5.5.1 & 7.0 support
Every supported version is a first-class citizen, parsed into one version-independent model — so nothing about your data depends on the format it arrived in.
Conversion that respects your data
Convert between versions through that common model. Compliant in, compliant out; where two versions genuinely disagree you get an explicit warning instead of silent loss.
A validator that cites the spec
Thousands of declarative rules check structure, references, cardinality, dates and values — and every diagnostic links to the exact spec clause behind it.
Your tree, your rules
Disagree with a rule for your data? Silence it per project, and bring it back whenever you want. Validation informs you; it never blocks you.
The full power of GEDCOM, and beyond
Express your data the way you mean it. When the standard is not enough, define and keep custom tags without breaking compliance everywhere else.
The specification, built in
Browse the official GEDCOM specs inside the app — searchable, navigable, in four languages. Cmd-click any tag in the editor to jump straight to what it means.
Fast enough to feel instant
Parsing and validation run on a background thread, so even large trees stay responsive while you work.
Explore more
Make it the home for your tree.
Open Linea Codex in your browser — bring a GEDCOM, or start fresh.