The mind map tool that doesn't need your data
Most AI mind map generators work the same way: you upload your document, it goes to a server, a language model produces a summary, and you get a generic structure back — slowly, at a cost per generation, with your content sitting on someone else's infrastructure.
SpawnGraph does something different. It reads the structure directly from your document inside your browser, in milliseconds, without sending a single byte anywhere. The result reflects your actual source — not an LLM's interpretation of it.
SpawnGraph vs AI mind map generators
| Feature | AI generators | SpawnGraph |
|---|---|---|
| Data sent to servers | ✓ Always | ✗ Never |
| Generation cost | Credits / tokens | Free |
| Speed | 5–30 seconds | Under 1 second |
| Output accuracy | LLM interpretation | Matches source exactly |
| Works offline | ✗ No | ✓ Yes (text/file) |
| File format support | 3–10 formats | 93+ formats |
| Real-time collaboration | Rarely included | ✓ Free |
| Edit after generation | Limited | ✓ Full canvas editor |
How SpawnGraph works instead
Instead of sending your content to a language model, SpawnGraph runs a lightweight NLP pipeline directly inside your browser using the Web Workers API. It detects headings, subheadings, and paragraph structure from your source and maps them to a node hierarchy — all in under a second.
- 1Drop your file, paste text, or drop a URL. Works with 93+ file formats, any URL, or raw pasted text. Nothing is uploaded.
- 2SpawnGraph parses structure in-browser. A Web Worker reads headings, sections, and hierarchy from your source. Your document bytes never leave your device.
- 3You get an editable mind map in seconds. Every node is fully editable. Drag, recolour, collapse, add branches, and share with a link — or export to PNG, PDF, or CSV.
Who uses SpawnGraph instead of AI mind map tools
Researchers
Upload a 50-page paper. Get a map of its sections, findings, and methodology in seconds — without it touching a third-party server.
Students
Turn lecture notes, textbook chapters, or YouTube lecture transcripts into revision maps. Free, no credits.
Legal and finance teams
Documents contain sensitive client data. SpawnGraph processes them entirely in-browser — nothing stored, nothing uploaded.
Developers
Convert documentation, README files, or API specs into navigable maps. Works offline, no API key needed.
Content creators
Map a competitor's article, a YouTube video, or a long blog post to understand its structure in seconds.
Teams
Share a live mind map link with collaborators. Real-time editing, no subscription required for guests.
I'm a bug-bounty hunter. A lot of the job is reading — disclosure reports, recon dumps, a target's own documentation — and turning it into a map of where to look next. Every "AI mind map" tool I tried wanted me to upload that material to their server first.
I'm not pasting a client's attack surface into someone else's cloud, full stop. So I built SpawnGraph to do the entire thing in the browser — open DevTools → Network while it runs and you'll see zero outbound traffic. The no-upload part isn't a checkbox I added later; it's the reason the tool exists.