Online Tool Store
Family Tree Builder
Use Family Tree Builder entirely in your browser, with no upload, no sign-up, and no data leaving your device. Runs entirely in your browser with no upload and.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Genealogy sketch
Family Tree Builder
Tree preview
How it works
- Add relationship notes, then review the generated generation outline.
- Review the browser-generated preview and adjust inputs as needed.
- Copy or reuse the result without uploading your data.
FAQ
Can I map parent and sibling notes?
Yes. Add one relationship note per line and the preview formats it into a simple tree outline.
Does it send data anywhere?
No. The tool runs entirely in your browser and does not upload your inputs.
Can I use the sample data?
Yes. The default values are included so the tool shows a worked example on load.
How we compare
| Feature | Online Tool Store | Manual worksheet | Generic calculator |
|---|---|---|---|
| Purpose-built controls | Yes | Manual setup | Limited |
| Worked example on load | Yes | No | Varies |
| Browser-only inputs | Yes | Yes | Varies |
Use this when you want a quick local first pass with structured output.