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GitDiagram

Turn GitHub repositories into interactive architecture maps

Visual architecture generator that transforms any GitHub repository into an interactive system design map within seconds. Analyzes repository structures and README documentation to produce validated component flowcharts, dependency graphs, and Mermaid diagrams. Supports direct URL routing by replacing hub with diagram, provides instant export to SVG and PNG formats, and handles private repositories through user-supplied personal access tokens.

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About GitDiagram

GitDiagram provides an automated visualization engine that converts GitHub repositories into interactive system architecture diagrams within seconds. By analyzing repository folder trees, dependency configurations, and documentation files, the engine constructs hierarchical visual graphs showing how components, microservices, and database layers interact. Users can inspect code relationships visually, click through to linked source files on GitHub, and stream AI-generated architectural walkthroughs that validate component boundaries.

Designed for software engineers, systems architects, and developers exploring unfamiliar open-source codebases, GitDiagram eliminates the cognitive friction of initial repository onboarding. Instead of manually tracing imports across dozens of directories, developers can replace "github.com" with "gitdiagram.com" in any repository URL to generate an instant architecture blueprint. The tool supports custom prompt refinement, Mermaid syntax editing, and direct export to SVG and PNG formats for engineering wikis, design reviews, and technical proposals.

The canonical repository (ahmedkhaleel2004/gitdiagram) is distributed under the MIT license and commands more than 15,900 GitHub stars with active TypeScript development. The platform offers a zero-install hosted web interface while remaining fully self-hostable using custom OpenAI or OpenRouter API endpoints. For proprietary codebases, GitDiagram handles private repositories securely by accepting personal access tokens stored strictly in local browser state without retaining server-side code copies.

Pricing & Platform Specs

Pricing Summary

100% free hosted web service and open-source (MIT); private repository scanning and self-hosting utilize user-provided API keys.

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FAQ

What is GitDiagram?

Visual architecture generator that transforms any GitHub repository into an interactive system design map within seconds. Analyzes repository structures and README documentation to produce validated component flowcharts, dependency graphs, and Mermaid diagrams. Supports direct URL routing by replacing hub with diagram, provides instant export to SVG and PNG formats, and handles private repositories through user-supplied personal access tokens.

Is GitDiagram free?

Yes — GitDiagram is free to use. 100% free hosted web service and open-source (MIT); private repository scanning and self-hosting utilize user-provided API keys.

Is GitDiagram open source?

Yes — GitDiagram is open source.

Is GitDiagram still maintained?

Yes — GitDiagram is active. Its listing was last verified on August 26, 2026.

What are the best GitDiagram alternatives?

The first editor-selected GitDiagram alternatives are Graphify, Grok-Wiki, Codebase Memory MCP, and more.

How does GitDiagram score in our review?

The published editorial review lists GitDiagram at 89/100 overall across speed, privacy, and developer experience. Check the review's evidence status and test metadata for its verification level.