Show HN: Instantly understand any GitHub repo

Category: devtools

Tags: visualization, github, mermaid

Score: 7.8/10 (Innovation: 7, Technical: 8, Documentation: 8, Utility: 8)

GitDiagram instantly converts any GitHub repository into an interactive system design diagram using AI, making codebase exploration much easier. Its novel approach of combining GPT-5-family models with Mermaid.js and a dual-pass generation pipeline stands out, and the support for both public and private repos with export options fills a clear developer need.

Target audience: backend devs, devops, data engineers

Repository: https://gitdiagram.com · TypeScript · MIT · 15555 stars

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