Diagrams with depth.
DrillFlow is a diagram editor where every node can open into its own sub-diagram. Zoom in, understand, come back up — with breadcrumbs instead of tab chaos. Runs locally in your browser.
DrillFlow›Features
What DrillFlow does
An editor for processes that are too big for a single canvas.
Drill-down without limits
Every node can hold a sub-diagram — nested as deep as you need. Breadcrumbs always show where you are.
Local-first
Your documents stay in your browser, on your device. Nothing is uploaded unless you choose to share.
Hand-drawn look
Sketch aesthetics with shapes, layers and a freehand pen — diagrams that look like thinking, not like slides.
Export in every direction
PNG, SVG, PDF, Markdown, Mermaid or JSON. PNG/SVG carry the editable scene inside, and Mermaid flowcharts import right back.
Share by link
One click creates a read-only link (snapshot up to 2 MB) — drill-down included for viewers. Revocable any time with an account.
Works offline
DrillFlow is an installable web app (PWA) and keeps working without a connection after the first load.
DrillFlow›Pricing
Pricing
DrillFlow is free. The editor stays that way.
Free
Free, forever- Full editor, unlimited drill-down depth
- Layers, pen and hand-drawn shapes
- Local documents on your device
- Export: PNG, SVG, PDF, Markdown, Mermaid, JSON
- Share links up to 2 MB
Pro
Coming soon- Cloud sync and document library
- Version history
- Managed share links
- Interactive HTML export and embedding
- Search across all your documents
… and more
What Pro would bePro adds cloud convenience on top of the free editor. Nothing that is free today will become paid.
DrillFlow›FAQ
Frequently asked questions
Is DrillFlow really free?
Yes. The editor is free and stays free. An optional Pro plan for cloud features will come later — nothing that is free today will become paid.
Where is my data stored?
Locally in your browser (IndexedDB). Only what you actively share reaches our servers — as a snapshot, stored in Germany.
How does sharing work?
"Share" uploads a read-only snapshot of your document and creates a link. Anyone with the link can view the diagram and drill into it. With an account you can manage and revoke your links.
Do I need an account?
No. Drawing, exporting and sharing work without one. You only need an account to manage the links you have shared.
Does DrillFlow work offline?
Yes. DrillFlow is an installable web app (PWA) and keeps working without an internet connection after the first load.
Can an AI assistant create diagrams for me?
Yes. Ask your assistant for a Mermaid flowchart with each level in a subgraph, then use Import → Mermaid… — every subgraph becomes a real drill-down Subflow. The full document format, plus a ready-made skill for Claude, is documented at Format.
Do you track me?
No. No analytics, no ad cookies, no fingerprinting. The only cookie is a functional session cookie when you sign in to the app.
DrillFlow›Contact
Question or feedback?
A bug, a wish, or a question — write to us right here.