Free online database schema design tool for ER diagrams and SQL generation
Free grid maker to turn photos into numbered drawing grids
Stage
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Founded
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Based in
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Pricing model
Freemium
Free
Pricing
Free tier includes the open-source editor with all SQL dialects, import & export, and local diagram storage. drawDB Pro offers paid plans for Solo Pro and Team Pro with cloud storage, real-time collaboration, AI schema assistant, GitHub integration, and priority support.
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Key features
Entity-relationship diagram editor
SQL generation for PostgreSQL, MySQL, SQLite, MariaDB, SQL Server, and Oracle
DBML import and export
Real-time collaborative database design
Cloud storage and team workspaces
AI-assisted schema design
Schema reverse engineering from existing SQL
Version history and migration generation
Export to SQL, JSON, PNG, JPEG, SVG, and PDF
Keyboard shortcuts and customizable workspace
Overlays numbered grid on photos with automatic line color detection
Three grid sizes: Fewer (3 squares), Medium (5 squares), More (8 squares) across short side
Works on phones and computers without installation or upload
Print two sheets: photo with grid and empty grid for drawing
Save gridded photos as JPG or PNG with no watermark
View individual squares enlarged while working
Supports JPG, PNG, WebP and iPhone HEIC photo formats
What makes it different
Free and open source with no account required to start designing
Supports all major SQL dialects in one tool
Self-hostable on your own infrastructure with Docker
Real-time team collaboration with shared cursors and presence
No sign-up, watermark, or photo upload required
Processes entirely in browser for instant results and privacy
Works on phones without app download using browser only
Numbered grid squares (A1, B3 format) help track drawing progress and teach proportion
drawDB
Easy Grid Maker