What free actually includes
Most "free tree diagram makers" are seven-day trials with a signup wall in front of the canvas and an export button that asks for a credit card. This one works differently, so here is the exact split:
| Feature | Free |
|---|---|
| All four modes (tree, decision, probability, text) | Yes |
| Unlimited nodes, unlimited diagrams | Yes |
| Layouts, themes, click-to-edit | Yes |
| PNG and PDF export | Yes — with a small footer watermark |
| Copyable ASCII text tree | Yes — never watermarked |
| Autosave + shareable links | Yes |
| SVG vector export, 4× hi-res, watermark removal | Pro (one-time purchase) |
The watermark is one small line of text under the diagram — your tree is never blocked, blurred, or resolution-capped. Pro exists so the site can stay free without ads; it never takes features away from the free tier.
No account, by design
Your diagrams save to your own browser automatically, and Share link packs the entire tree into the URL itself — that's why no login is needed to save or share. Nothing you type is stored on our servers.
Start with the main tree diagram maker, or jump straight to the mode you need: decision trees, probability trees, family trees, syntax trees, or text trees for READMEs.