# lukilabs/beautiful-mermaid

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7,187 stars · 219 forks · TypeScript · mit

## Links

- GitHub: https://github.com/lukilabs/beautiful-mermaid
- awesome-repositories: https://awesome-repositories.com/repository/lukilabs-beautiful-mermaid.md

## Description

This project is a renderer and theme engine for Mermaid.js that converts diagram syntax into styled SVG graphics and ASCII text. It provides a type-safe diagram editor and a pipeline for transforming diagram source code into scalable vector graphics or plain text visuals.

The system features a dedicated theme engine that maps editor colors and CSS variables to diagram elements. It enables dynamic diagram theming through CSS custom properties for real-time color updates and supports index-based styling to override the appearance of specific nodes and edges.

The tool covers a range of visualization capabilities, including the generation of XY charts and flowcharts. It supports various output formats, ranging from browser-based SVG rendering to Unicode-based ASCII art for terminal environments.

## Tags

### Graphics & Multimedia

- [Diagram Renderers](https://awesome-repositories.com/f/graphics-multimedia/diagram-renderers.md) — Converts Mermaid syntax into highly customized SVG graphics or ASCII text visuals. ([source](https://github.com/lukilabs/beautiful-mermaid/blob/main/README.md))
- [SVG-Based Vector Rendering](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/rendering/engines/canvas-vector-graphics/svg-based-vector-rendering.md) — Generates visual diagrams by converting structured graph data into scalable vector graphics strings.
- [Chart Generators](https://awesome-repositories.com/f/graphics-multimedia/chart-generators.md) — Automatically generates styled XY charts and flowcharts from structured text definitions.

### User Interface & Experience

- [Theme Style Customizations](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/component-styling-tools/component-styling/theme-style-customizations.md) — Provides a comprehensive theme engine for customizing diagram appearances via pre-set themes and custom color palettes. ([source](https://github.com/lukilabs/beautiful-mermaid/blob/main/README.md))
- [CSS Variable Theming](https://awesome-repositories.com/f/user-interface-experience/css-variable-theming.md) — Implements a theming system that maps design tokens to native CSS variables for real-time styling updates.
- [Dynamic Theming](https://awesome-repositories.com/f/user-interface-experience/dynamic-theming.md) — Enables real-time updates to diagram colors and styles through dynamic CSS custom property mapping.
- [CSS Variable Styling Systems](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/styling-architectures/styling-systems/component-style-customization/css-variable-styling-systems.md) — Implements a system using CSS custom properties for real-time, instant updates to diagram colors without re-rendering. ([source](https://github.com/lukilabs/beautiful-mermaid#readme))
- [Component Appearance Customizers](https://awesome-repositories.com/f/user-interface-experience/terminal-user-interfaces/visual-styling-presentation/interface-appearance-customization/component-appearance-customizers.md) — Offers theme variants and options to customize the visual style, borders, and fonts of diagram elements. ([source](https://github.com/lukilabs/beautiful-mermaid/blob/main/samples-data.ts))
- [Diagram Element Styling](https://awesome-repositories.com/f/user-interface-experience/visual-styling-rules/diagram-element-styling.md) — Allows extensive customization of Mermaid diagram elements using themes, palettes, and CSS.
- [Element Overrides](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/styling-architectures/styling-systems/component-style-customization/component-style-overrides/style-overrides/element-overrides.md) — Supports overriding specific edge colors and stroke widths using index-based styling declarations. ([source](https://github.com/lukilabs/beautiful-mermaid#readme))
- [Type-Safe Theme Customization](https://awesome-repositories.com/f/user-interface-experience/type-safe-theme-customization.md) — Ensures theme and layout consistency through a type-safe configuration pipeline for visual styles.

### Data & Databases

- [SVG Diagramming Libraries](https://awesome-repositories.com/f/data-databases/data-analysis-visualization/visualization-frameworks-libraries/svg-diagramming-libraries.md) — Implements a pipeline to generate scalable vector graphics from diagram source code.
- [XY Charts](https://awesome-repositories.com/f/data-databases/data-analysis-visualization/visualization-frameworks-libraries/chart-components-utilities/xy-charts.md) — Provides the ability to render bar and line charts with categorical or numeric axes. ([source](https://github.com/lukilabs/beautiful-mermaid/blob/main/README.md))

### Software Engineering & Architecture

- [ASCII Renderers](https://awesome-repositories.com/f/software-engineering-architecture/infrastructure-configuration-languages/multi-language-support/diagram-text-rendering/ascii-renderers.md) — Translates diagram layouts into plain text using Unicode box-drawing characters for terminal environments.

### Content Management & Publishing

- [Documentation Visualization Tools](https://awesome-repositories.com/f/content-management-publishing/content-management-systems/content-architecture-modeling/documentation-tooling/visual-presentation/documentation-visualization-tools.md) — Generates consistent, branded, and themed diagrams tailored for technical documentation workflows.

### Development Tools & Productivity

- [Diagram Structure Parsing](https://awesome-repositories.com/f/development-tools-productivity/ast-transformation-tools/ast-based-formatters/diagram-structure-parsing.md) — Transforms raw domain-specific language text into structured graph objects for programmatic manipulation.
- [Visual Diagram Editors](https://awesome-repositories.com/f/development-tools-productivity/diagramming-tools/visual-diagram-editors.md) — Transforms domain-specific language into visual diagrams with various node shapes and layout options. ([source](https://github.com/lukilabs/beautiful-mermaid/blob/main/package.json))
- [Type-Safe Diagram Editors](https://awesome-repositories.com/f/development-tools-productivity/type-safe-diagram-editors.md) — Provides a type-safe interface for the programmatic creation and styling of visual diagrams.