Flowblock - AI Flowchart Editor for Notion

Edit AI-generated Mermaid flowcharts in Notion. Excalidraw and draw.io diagrams, as native Notion image blocks.

Turn AI-generated flowcharts into editable diagrams. Notion AI is great at sketching flowcharts - but it hands you a static Mermaid code block you can't really edit. Flowblock turns those AI-generated diagrams into real, editable drawings, right inside Notion. No new tab. No copy-paste. No external service. HOW IT WORKS 1. Notion AI gives you a Mermaid block. Ask it to map a workflow, decision tree, or system diagram - it produces a mermaid code block. 2. Click Import. Hover the Mermaid block in Notion. Flowblock adds an Import button. One click parses the source and opens a real, editable diagram in a modal. 3. Edit, save, done. Drag a node, recolor, add a label. Save and the Notion block becomes a clean Excalidraw or draw.io drawing - yours forever, even if you uninstall Flowblock. TWO EDITORS, YOUR CHOICE – Excalidraw - the beloved hand-drawn style. Perfect for sketches, brainstorming, casual diagrams. – draw.io - rigorous, technical diagrams. UML, BPMN, network topology, system architecture. Pick the right tool per diagram. Both save as native Notion image blocks. BEYOND AI IMPORTS – Floating "Add drawing" button - open a blank canvas on any Notion page when you want to draw from scratch. – Hover-to-edit - every Flowblock drawing reopens with one click; your edits persist forever. – Native Notion blocks - drawings live as real image blocks. No iframes, no external links, no broken embeds. Your diagrams survive uninstalling. – Dark mode - matches Notion's theme automatically. PRO FEATURES – Unlimited drawings - free plan includes 5 drawings per month (AI / Mermaid imports count toward that bucket); Pro removes the cap entirely. – Version history with one-click rollback - every save snapshots the last 5 versions inside the drawing itself. Restore any of them with one click. – Multiple Notion workspaces - connect Flowblock to as many workspaces as you need (personal, team, client) and switch between them from the extension menu. – Priority support. PRICING – Free forever - 5 drawings per month, both editors, AI / Mermaid flowchart import, native Notion blocks. – Pro - $4.99/month or $44.99/year (3 months free). Unlimited drawings + version history + multi-workspace + priority support. PRIVACY Drawings are uploaded directly to your own Notion workspace using your Notion access token. We never store your drawing content on our servers. Authentication tokens stay in Chrome's local storage. Learn more: https://flowblock.app/privacy.html WORKS WITH Notion Free, Plus, Business, and Enterprise plans. Chrome on macOS, Windows, and Linux. Firefox and Edge support in progress. QUESTIONS OR FEEDBACK Email support@flowblock.app or visit https://flowblock.app