erdMaid: Export Database Tables to Perfect Mermaid ERDs
Overcome the limitations of default IntelliJ exports. Accurately convert your database tables—including exact column orders, comments, and relationships—into perfect Mermaid ERDs.
While IntelliJ IDEA and DataGrip offer fantastic built-in Database tools, sharing your schema documentation can be frustrating. The default Mermaid export feature often falls short for practical use.
It tends to force schemas into a classDiagram format instead of a proper ERD, scrambles the actual ordinal position of your columns, and ignores crucial table and column comments (logical names).
To solve this, I created erdMaid—a plugin designed to flawlessly export your database tables into the official Mermaid erDiagram format.
✨ Key Features
- Native
erDiagramSyntax: Generates standard Mermaid Entity-Relationship Diagrams, not clunky class diagrams. - Preserves Column Order: Keeps the exact ordinal position of columns as they are defined in your database.
- Rich Metadata Extraction: Automatically maps Data Types, Primary Keys (PK), and draws relationship lines for Foreign Keys (FK).
- Includes Comments: Extracts table and column comments so your generated diagrams are fully self-explanatory.
- One-Click Clipboard: No extra steps. The generated Mermaid script is instantly copied to your clipboard.
🚀 How to Use
- Open the Database tool window in IntelliJ.
- Select the table(s) you want to export.
- Right-click and select
Export as Mermaid ERDfrom the context menu. - Paste the copied Mermaid code wherever you need it!
💡 Tip: Pair this with my other plugin, markflow (a live Markdown & Mermaid editor). Extract your schema with erdMaid and instantly visualize it in markflow for an ultimate documentation workflow!
📥 Download & Installation
You can find erdMaid by searching in the JetBrains Marketplace, or install it directly via the link below: