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Turn GitHub repositories into interactive architecture diagrams

Gitdiagram is an open-source tool that visualizes complex file structures and code relationships in GitHub repositories within seconds. By changing a single letter in the URL, it presents the system architecture of massive codebases as interactive diagrams.

Updates

  • October 29, 2026: Stars 17,581 → 18,589.
  • September 30, 2026: Stars 16,568 → 17,581.

What you get

  • Code Map in Seconds: Get a bird's-eye view of the system architecture, core modules, and data flow without getting lost in a foreign repository of thousands of lines.
  • One-Click URL Shortcut: Instantly generate diagrams without installation by replacing github.com with gitdiagram.com in any GitHub repo URL.
  • Interactive Nodes: Click on the boxes on the diagram to go directly to the corresponding source code file or folder on GitHub.
  • Export Support: Download the generated architecture diagrams in PNG, SVG, or text format for documentation or presentations.

One-click usage: URL replacement shortcut

URL Shortcut Example
# Orijinal GitHub adresi:
https://github.com/facebook/react

# Gitdiagram etkileşimli şema adresi:
https://gitdiagram.com/facebook/react

Technical architecture and working logic

Gitdiagram treats the codebase not just as plain text, but as a relational system graph:

Installation and local deployment

Preparing the local environment and installing dependencies
git clone https://github.com/ahmedkhaleel2004/gitdiagram.git
cd gitdiagram
bun install
cp .env.example .env
Starting the development server
# .env içine GITHUB_TOKEN ve OPENAI_API_KEY ekleyin
bun run dev

If you don't know how to code: AI agent prompt

Paste this into your AI agent (Claude Code · Codex · Antigravity)

Generate a system diagram of the GitHub repository I examined, based on the Gitdiagram architecture. Identify the main components, data flow directions, entry points, and external dependencies in the repository. Draw the architecture as a flowchart in Mermaid.js format and explain the function of each component in two sentences each.

Repository: https://github.com/ahmedkhaleel2004/gitdiagram. Follow the official instructions in the README of this repository for setup and execution.

Before starting, check which OS we are on and if the necessary tools (e.g., Python, Node.js, Git, Docker) are installed. Install any missing ones step-by-step according to this system.

Create a new, empty folder to work in. Do not touch any files outside this folder and do not delete anything. Tell me what you are going to do in one sentence before running each command.

Tell me what I should see on the screen at the end of each step. If an error occurs, I will paste the error message to you exactly as it is, and we will fix it together.

Critical warnings and limitations

  • Massive Monorepos: Monorepos containing tens of thousands of files can hit the GitHub API rate limit. Using a personal GitHub token expands the limits.
  • Private Repositories: The cloud version only supports public repositories. For on-premises private repositories, you must run the runner on your local server with your own token.
  • LLM Token Cost: To optimize the amount of LLM API tokens spent on large repositories when running it on your own server, you must configure file filtering rules.

Related dictionary terms

SVGMermaidAPI GatewayLLM APIGatewayDatabase

Links

TreScout did not build this tool · we found it in GitHub trends and wrote it up. This page describes the repository as of 2026-09-19: The star count and our text belong to that day, the repository may have changed since. Check the repository link for the current state. The introductory text was prepared with AI from the repository's own documentation, and this page was machine-translated from the Turkish original · the Turkish version prevails.