Lineage — Fantasy Family Tree App

A web app for building and viewing family trees for tabletop RPG campaigns, worldbuilding and fiction. Everything stays in your browser.

Use it at lineage.dungeongadgets.com. No install or account needed.

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Features

• Automatic layout that keeps couples side by side and children beneath them; drag a card to adjust it, Arrange to reset
• Character records for name, titles, role, faction, species, age, pronouns, status and notes
• Family and social relationships: parents, partners, children and siblings, plus Adopted, Guardian, Rival, Ally, Enemy, Mentor, Apprentice and Other
• Hereditary traits that pass to children as Carrier or Unaffected
• Several dynasties in one browser, with import and export
• A floating, collapsible panel for the character list and records; the mouse wheel zooms the tree everywhere else
• Search, lineage highlighting for the selected character, and undo/redo (Ctrl+Z / Ctrl+Shift+Z)
• Light and dark appearance in the DungeonTools style, laid out for phones as well as desktops

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Running it locally

npm install
npm run dev

Then open http://localhost:5173. To produce a static build you can host anywhere, run npm run build; the result is in dist/.

All data is saved in your browser (IndexedDB). No server or account is needed. To move a tree from the original app, export it there and use Import here; v1 .lineage.json files are converted automatically.

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Tech Stack

• React + TypeScript, built with Vite
• React Flow for the canvas, ELK for automatic layout
• Zustand + zundo for state and undo/redo
• Zod validation for imported files and stored data
• IndexedDB for local persistence

The original single-file version is kept in legacy/index.html.

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Species Presets

Human, Elf, Dwarf, Halfling, Orc, Tiefling, Dragonborn, Gnome, Half-Elf, Undead

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License

MIT. See LICENSE for details.