Liam ERD automatically generates beautiful, interactive ER diagrams from database schemas, making it easy for developers and teams to visualize, explore, and share complex data structures.

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🚀 Overview

Liam ERD is an open-source tool designed to effortlessly generate interactive ER diagrams from database schema files, transforming complex data structures into clear, navigable visualizations.

It solves the problem of manual diagram creation, which is labor-intensive, error-prone, and quickly outdated, as well as limitations of existing tools that produce static images or require complex setups. By auto-generating diagrams that support panning, zooming, filtering, and more, it reduces onboarding costs, helps non-engineering roles understand databases, and enables seamless collaboration.

Built for developers, database engineers, teams, and data analysts working with public or private repositories. The creator, Hirotaka Miyagi, built it to simplify communication in software development and integrate easily into CI/CD pipelines for always-up-to-date documentation.

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✨ Key Features

• Interactive UI: Panning, zooming, filtering, relationship highlighting, and focusing for intuitive exploration of large schemas (100+ tables).
• Zero-config CLI: Simple setup with npx @liam-hq/cli init for local environments or CI/CD integration.
• Shareable links: Generate precise, tailored views for discussions, onboarding, or workflows.
• High performance and broad support: Handles PostgreSQL, Prisma, Ruby on Rails (schema.rb), Drizzle, MySQL, SQLite, BigQuery, and more.
• Optional: Community-driven roadmap with upcoming features (see GitHub projects).

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🛠 Tech Stack

• Frontend: React, React Flow, Vite.js, TypeScript, CSS
• Backend/CLI: Node.js, TypeScript
• Other: WebAssembly for performance
• Supports: PostgreSQL, Prisma, tbls, Ruby on Rails, and various ORMs/DBs
• Hosting: Vercel, Cloudflare Pages

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👥 Who Is This For?

This project is useful for:

• Developers who want to reverse engineer schemas and visualize databases quickly
• Teams looking for collaborative, always-up-to-date ER diagram documentation
• Indie makers and data analysts building or understanding data-intensive applications

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📸 Screenshots / Demo

• Live demo: https://liambx.com
• GitHub: https://github.com/liam-hq/liam

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Yes — Fully open-source under Apache 2.0 license and free to self-host or use the web viewer.

Is the source code available?

Yes — https://github.com/liam-hq/liam

Can I contribute?

Yes — Report issues, suggest features via GitHub issues/PRs, or follow CONTRIBUTING.md. Check the public roadmap at https://github.com/orgs/liam-hq/projects/1.

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📬 Contact & Links

• Website: https://liambx.com
• GitHub: https://github.com/liam-hq/liam
• Twitter/X: https://x.com/liam_app
• Email: N/A

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