PH · PRODUCT_HUNT// 3h agoPRODUCT LAUNCH

Beauty Diagram turns Mermaid and PlantUML into presentation-ready diagrams.

Beauty Diagram is a diagram beautifier for Mermaid, PlantUML, and draw.io workflows that focuses on making code-generated diagrams look intentional instead of default. It offers curated themes, animated SVG/GIF previews, and export to SVG, PNG, and GIF through a web editor, CLI, and API, so teams can move the same source from docs to PRs to presentations without redrawing it in Figma.

// ANALYSIS

Hot take: this is a sharp wedge product because it solves the ugly-last-mile problem for text-based diagrams instead of trying to replace Mermaid or PlantUML.

–Strong fit for engineering teams that already author diagrams in code and just want better output.
–The theme and animation layer is the real differentiator; that is what makes it shareable in slides and docs.
–CLI and API support make it more than a designer-only web app, which should help adoption in CI and documentation pipelines.
–The main risk is overlap with existing diagram tools unless the beautification quality is clearly better than native renderers.

// TAGS

diagrammingdevtoolproductivitydata-visualizationmermaidplantumlcliapi

DISCOVERED

3h ago

2026-05-01

PUBLISHED

8h ago

2026-05-01

RELEVANCE

9/ 10

AUTHOR

[REDACTED]