Create & edit
AI: idea, scan, and layout
Generate Mermaid from plain language, scan a sketch, or polish layout with daily AI allowances.
On this page3 sections
From idea
Describe a process in plain language (and optionally pick a diagram type). SayDiagram generates editable Mermaid you can refine in the editor or Arrange.
- Free: 3 ideas per day.
- Pro / Team: 100 ideas per day.
Image scan
Upload one or more whiteboard photos or hand sketches (up to 5). Image scan cleans contrast, reads the diagram with high-detail vision, and turns it into Mermaid you can edit. Best results come from readable labels; crop to the diagram when possible.
- PNG, JPEG, or WebP — max 4MB each.
- Free: 1 scan per day.
- Pro / Team: 20 scans per day.
Polish and AI layout
Use layout polish and AI layout tools to improve spacing. Auto-layout presets (balanced, square, landscape, portrait) help when Arrangeable diagrams get crowded.
- Free: 3 AI layout polishes per day.
- Pro / Team: 50 layout polishes per day.
Daily AI allowances apply on all plans. Extreme automated usage may be rate-limited.
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