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Quick answers
When should I pick Mermaid text diagrams?
When the story is: process docs, onboarding, assignment logic, PR explanations.
When should I avoid Mermaid text diagrams?
Skip it in cases like: pixel-perfect brand illustrations that need freehand layout.
Who invented or popularised it?
Mermaid (2014) popularized Markdown-native diagrams on GitHub
What does it encode?
textual graph syntax rendered to SVG boxes and edges
Is it OK in ads?
Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure.
Will a teacher accept it?
Yes for lab reports and poster boards if axes, units and a source line are present.
Mermaid text diagrams encodes values as textual graph syntax rendered to SVG boxes and edges. Mermaid (2014) popularized Markdown-native diagrams on GitHub.
In reports, ads and assignments it fits process docs, onboarding, assignment logic, PR explanations. Skip it when pixel-perfect brand illustrations that need freehand layout.
Principles
- Encoding — The core mark of Mermaid text diagrams is textual graph syntax rendered to SVG boxes and edges.
- History — Mermaid (2014) popularized Markdown-native diagrams on GitHub
- Fit — process docs, onboarding, assignment logic, PR explanations
- Shared baseline — The eye compares length and position more accurately than area.
- Audience — PowerPoint, Excel or Google Sheets and Meta, Google and retail print share the same geometry.
Misconceptions
- Pretty equals true — Decoration rarely persuades; it slows reading.
- 3-D helps — Perspective distortion wrecks comparison. Keep it flat.
- More series is richer — Do not stack stories. One Mermaid text diagrams, one claim.
- Default palette is fine — Rainbow defaults fail color-blind viewers and grey print. Change Excel or Google Sheets defaults.
Why it matters
- Work — Work: process docs, onboarding, assignment logic, PR explanations. Readable in four minutes in PowerPoint.
- Ads — Ads: one number and one shape speak first in Meta, Google and retail print.
- School — School: for lab reports and poster boards, pick the form that answers the rubric.
- Craft — Craft: honour textual graph syntax rendered to SVG boxes and edges and decoration falls away.
Mermaid text diagrams: honour textual graph syntax rendered to SVG boxes and edges, and switch when pixel-perfect brand illustrations that need freehand layout.