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Pasting and detection
- How to copy a whole reply from your AI assistantWhat the “Copy” button gives you in ChatGPT and Claude, and why you can paste the whole reply into Diagramate without cutting out the code block.
- Using Diagramate on a phoneHow pasting, rendering, theming and downloading work on a phone, including the editor drawer.
Errors and fixes
- Common errors and how to fix themWhat each message in the error bar means and how to fix it - arrows, the end keyword, unclosed brackets, full-width punctuation, missing diagram type, missing end, mind map roots, oversized diagrams.
- Mind map syntax and indentation rulesA Mermaid mindmap cheat sheet - one root, levels by indentation, node shapes, no list markers - plus the prompt that gets assistants to output mindmap code directly.
- Large diagrams - the edge limit and export scaleDiagrams with more than 500 edges are refused by the renderer; a few hundred nodes take a couple of seconds to lay out; export scale is lowered automatically, and SVG has no pixel limit.
Export and files
- Putting the diagram into Word and PowerPointWhat the exported docx and pptx contain, how to edit the diagram later, when to use PNG or SVG, and how the clipboard copy works.
- Why the PDF is a bitmap, and how to get vector outputDiagramate's PDF wraps a 3x high-resolution image in a page sized to the diagram. For vector output, export SVG and convert.
- Downloads do not work inside an in-app browserIn-app browsers such as WeChat block file downloads. Open the page in your regular browser, or copy the PNG to the clipboard instead.
- Working with draw.io: export .drawio, recover Mermaid sourceExport a diagram as a draw.io file (double-click the shape there to keep editing the Mermaid), and recover Mermaid source from draw.io files or pasted draw.io content; what can and cannot be recovered.
- Share link - send the diagram together with its code“Share link” compresses the diagram's code and theme into the part of the address after #. It never goes through a server; whoever opens it sees the same diagram and can keep editing. With the length limit, what to do when a link gets cut short, and how it works with the Mermaid live editor.
Themes and styling
- Themes and export backgroundsWhat each of the six themes is for, how dark mode relates to the diagram theme, and how to choose between transparent and solid export backgrounds.
- Edit text and layout in the previewDouble-click a node in the preview to edit its text (flowcharts and mind maps); the change is written back to the code. The Layout menu changes flowchart direction and node / rank spacing. Everything edits the Mermaid code itself, so exports and share links follow.
- Free canvas: drag, relabel and sketch in Excalidraw"Canvas" turns the current diagram into hand-drawn style shapes you can drag, relabel and annotate freely; it is a one-way conversion that never writes back to the code. Which diagrams split into shapes, which come in as one picture, how the canvas is saved and downloaded.
Privacy and allowances
- AI fix and AI tidy - allowance, privacy and the local checkWhen the AI fix button appears, what AI tidy changes and what it leaves alone, how many requests you get per day (shared), what is sent, whether it is stored, and what the local check before applying means.
- Account and cloud save: signing in, the free limit, what gets storedCloud save is optional. How to sign in (email code or Google), how many diagrams are free, what is stored, how to open a diagram on another device, what happens when two devices both changed it, and how to delete or sign out.
- Terms of ServiceHow Diagramate works: the free features stay free, accounts and cloud save, paid plans (Lite, AI credit pack) collected by Creem, subscription and cancellation rules, acceptable use.
- Refund PolicyRefund rules for Lite and the AI credit pack: full refund within 7 days of the first subscription charge if fewer than 20 AI runs were used, renewals within 48 hours, unused credit packs within 7 days; refunds go back through Creem.
- Privacy PolicyWhat Diagramate collects and what it does not. Rendering and export run in your browser; a diagram is uploaded only when you save it to the cloud. Accounts, AI fixes, payments, cookies, retention and how to reach us.