Turn photos into printable black-and-white coloring pages, privately in your browser
Free online database schema design tool for ER diagrams and SQL generation
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
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.
Key features
Convert photos to black-and-white outlines for coloring
Adjustable detail, line thickness, and style settings
Multiple output formats: PDF and PNG
Three conversion styles: Outline, Sketch, and AI Model
Gallery of 160 ready-made printable coloring pages
Browser-based coloring canvas with undo and palette
Chrome extension for right-click conversion
No account or sign-up required
Portrait or landscape orientation on A4 or US Letter
AI Model downloads about 30 MB to run locally on first use
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
What makes it different
All processing runs in your browser with no image uploads or server storage
No sign-up, account, or watermark required
Real-time preview while adjusting settings
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