What is DiagramDB?
DiagramDB is a browser-based set of database-design and SQL utilities. You can paste SQL to format, validate, or minify it; use SQL DDL or text-based definitions to create an ER diagram; and export a diagram or schema when it is ready. The official documentation says core processing happens in the browser and work can be used without creating an account, making it useful for a quick private schema sketch or SQL cleanup.
What stands out
A free browser-based toolkit for formatting and validating SQL, turning SQL DDL or text definitions into ER diagrams, and exporting diagrams or schemas without sending work to a server.
Frequently Asked Questions
Questions about DiagramDB
Do I need an account to use DiagramDB?
No. DiagramDB’s official site and documentation state that its core tools work in the browser without signup, with work saved locally in browser storage.
What can I make with DiagramDB?
DiagramDB provides SQL formatting and validation tools plus ER-diagram, SQL-to-ERD, schema-visualization, and schema-building workflows. Its documentation lists exports including PNG, SVG, PDF, and SQL DDL for diagrams.