51nk0r5w1m/chartdb

ChartDB is a web-based tool that lets you visualize and design your database structure without installing anything or needing to share your database password. It turns your database schema into a visual diagram so you can see how all your tables connect and understand your data structure at a glance. The way it works is elegant: you run a special query provided by ChartDB against your actual database, which returns your schema as JSON. You then paste that JSON into ChartDB's editor, and it instantly generates a visual diagram showing all your tables, columns, and relationships. From there, you can edit and customize the diagram to add notes, reorganize things, or explore changes. If you want to migrate to a different database system, ChartDB can also generate the migration scripts automatically, for example, converting a MySQL schema to PostgreSQL. This tool is useful for several kinds of people. Database administrators and engineers use it to document how their databases are structured for team reference. Startup founders and product managers can use it to understand their data model without needing deep technical knowledge. People planning database migrations can use it to visualize what they're working with and plan changes. It supports a wide range of databases including PostgreSQL, MySQL, SQLite, SQL Server, MariaDB, CockroachDB, and ClickHouse, so it works whether you're running traditional databases or newer cloud variants like Supabase or Cloudflare D1. ChartDB is free to use online at their website, or you can run it locally on your own computer if you prefer. The project is open-source and under active development, with a community Discord channel where you can ask questions or suggest improvements. The README notes that AI-powered features (like smart export suggestions) are optional and require you to connect your own AI service key, so you have full control over privacy and costs.