Markdown and Mermaid Documentation
Learn how to use Markdown and Mermaid Documentation workflows in DiagramPreview with practical examples, export notes, and documentation tips.
When this workflow helps
Text-first diagrams are easiest to maintain when the source stays close to the documentation. A browser preview step helps catch syntax issues, layout surprises, and export problems before the diagram reaches a README, product spec, or architecture note.
DiagramPreview is organized around that workflow: paste source, preview output, inspect errors, and export the result when the diagram is ready.
How to preview effectively
Start from a small sample, then add structure in short passes. For generated diagrams, review labels, direction, and grouping before polishing visual details.
Use the related tool links to move between formats. Mermaid, PlantUML, Graphviz, Markdown, JSON, YAML, and draw.io each fit a different documentation job.
Export and publish notes
SVG is usually the best export for documentation because it stays sharp at every size. PNG is useful for chat tools, slides, and systems that do not embed SVG safely.
Keep the original text source with the exported image. That makes future edits reviewable and keeps diagrams from becoming one-off screenshots.