ERD-Free

ERD-Free is a free online ER diagram design tool. You can design database schemas visually and export them as SQL.

ERD-Free: A Database Design & ER Diagram Tool This is an ER Diagram program designed to assist with database design. It does not require a separate server login, allowing you to save your work directly to your PC as local files. Additionally, if you are a Supabase user, you can seamlessly integrate the tool with your Supabase database. I believe that the most effective way to convey your intent when giving tasks to an AI is through a well-defined database structure. ERD-Free can generate outputs in SQL, MD (Markdown), and HTML formats, enabling you to provide the AI with the specific format it needs. [Key Features] Table Creation: Easily design and manage database tables. Relationship Mapping: Supports 1:1, 1:N, and N:M relationship modeling. Index Management: Create and manage indexes for performance optimization. Partitioning Support: Design partitioned tables for large-scale data. Design Organization: Includes "Group" and "Bundle" features to help organize complex designs. Documentation: Add detailed descriptions to both tables and individual columns.