Flowblock

Flowblock adds editable diagrams to Notion: click a floating button on any Notion page to open a blank Excalidraw or draw.io canvas, draw, save, and the diagram lives in the Notion page as an editable image block. Flowblock also imports Mermaid blocks. When Notion AI generates a flowchart, Flowblock turns it from a read-only block into an editable diagram you can restyle, relabel, and re-save without leaving the page. Saved diagrams are stored in your Notion workspace, not on a Flowblock server. They stay yours forever, even if Flowblock disappears. Free covers 5 diagrams per month including Mermaid imports. Pro removes the cap and adds version history plus multiple Notion workspaces.