The Excalidraw plugin integrates the Excalidraw sketching tool into Obsidian, allowing users to create and manage visual diagrams directly within their vault. It enables seamless embedding of drawings into markdown documents and supports linking between drawings and notes. The plugin offers extensive customization options, including templates, export settings, and compatibility features for working across different platforms. Users can enhance their workflow with features like LaTeX support, markdown embedding, and a script engine for automation. Excalidraw drawings can be annotated, linked, and previewed within Obsidian, providing a powerful tool for visual thinkers and content creators.

The Adamantine Pick plugin allows users to embed and render Pikchr diagrams directly within Obsidian notes. It simplifies the process of generating SVG diagrams from Pikchr code blocks, providing an offline, client-side solution without requiring external installations. The plugin supports advanced customization through CSS styling, enabling tailored visual enhancements for diagrams. It offers features such as importing pre-designed diagram notes, exporting designs, and interacting with other Obsidian plugins for seamless integration. The tool is ideal for users looking to incorporate lightweight, vector-based illustrations into their notes for technical or creative purposes.

The Flowcharts plugin enables users to create and render flowcharts directly within Obsidian notes using `flowchart.js` syntax. It provides an intuitive way to visualize processes, decision trees, and workflows through a dedicated code block format. Users can customize flowchart elements, including line width, font size, colors, and decision path labels, directly from the plugin settings.

The D2 plugin enables users to create modern diagrams within Obsidian using the D2 diagram scripting language. By turning text into diagrams, the plugin offers a seamless way to visualize ideas and structures directly in your notes. It supports various layout engines, customizable themes, padding, sketch-like rendering, and other configuration options to enhance the visual appeal of diagrams. Users can create diagrams by using fenced code blocks with the `d2` language tag. This plugin requires a local installation of D2 and allows for additional customization by specifying paths and settings.

The Obsidian Graphviz plugin allows users to create and render Graphviz diagrams directly in Obsidian using the Graphviz DOT language. By integrating a local Graphviz executable or using experimental d3-graphviz support, this plugin enables seamless diagram creation within Obsidian. Users can define their graphs using DOT syntax within fenced code blocks, with immediate preview rendering of the diagrams. This plugin is perfect for users who want to visualize complex relationships, workflows, or processes in their notes, making it a valuable tool for visual thinkers and technical documentation.

The TikZJax plugin enables seamless integration of LaTeX and TikZ diagrams into Obsidian notes, supporting the rendering of complex graphics like graphs, circuits, chemical diagrams, and more. By utilizing the standalone document class and a variety of LaTeX packages, users can create rich visual content directly within their markdown files. The plugin supports TikZ-specific code blocks for defining diagrams and offers compatibility with packages such as chemfig, tikz-cd, circuitikz, and pgfplots. It is a valuable tool for users who want to enhance their notes with mathematically precise and visually detailed diagrams, catering to academic, professional, or personal needs.

The WaveDrom plugin adds support for rendering WaveDrom diagrams directly within Obsidian. Using a `wavedrom` code fence, users can create timing diagrams and digital waveforms in their notes, enhancing technical documentation and visualization. This integration leverages the WaveDrom library, making it easier to generate and visualize complex timing diagrams without leaving the Obsidian environment.

The Diagrams.Net plugin integrates the diagrams.net online editor into Obsidian, allowing users to create and edit diagrams directly within their notes. This plugin provides full access to the diagrams.net feature set and shape libraries but requires an internet connection. Diagrams are saved as separate files alongside their image representations, enabling easy access and editing in any diagrams.net-compatible editor. The plugin supports moving and renaming diagrams within Obsidian while ensuring both associated files are updated. However, users should manually duplicate files if copying diagrams, as automatic association is not supported.

The Mermaid Themes plugin allows Obsidian users to customize and apply themes to their mermaid.js diagrams. Users can either provide a complete mermaid theme object or modify specific parts of the base theme, with the plugin merging changes seamlessly. This enhances the visual appeal of diagrams by supporting advanced theming options. Users are required to use an alternative code block label (`merm`) instead of the default `mermaid` to integrate themes. The plugin leverages mermaid.js theming features, providing a flexible way to improve diagram aesthetics in notes.

The Sankey plugin enables users to create Sankey diagrams directly within Obsidian using simple YAML-based syntax. These diagrams visually represent flows between different entities, making it useful for analyzing processes, energy transfers, financial transactions, or hierarchical structures. Users can define links between nodes, specify values for each connection, and customize node colors for better visualization. If node definitions are incomplete, the plugin automatically infers missing nodes based on link data.