Browser-based tool for generating OpenGL and DirectX tangent-space normal maps from images
The whiteboard for you, your team and your AI
Stage
Not given
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: unlimited local boards and 3 cloud boards, no card required. Pro: $6.99 per month or $69.99 per year (about 17% less than twelve monthly payments), first month free.
Key features
Local image processing
OpenGL and DirectX output
Sobel and Scharr filters
Material lighting preview
PNG export
Smoothing and strength controls
Edge behavior control (clamp or wrap)
Tiled preview
Height inversion
Interactive light inspection
MCP server for Claude, ChatGPT and other AI apps
Real-time collaboration
Infinite canvas with hand-drawn feel
Local-first storage with optional cloud sync
End-to-end encrypted snapshot links
Sketched-shape recognition
Lasso selection
Presentation mode
Version history
Extensible with marketplace extensions
What makes it different
Runs entirely in the browser with no server upload or account required
Supports both OpenGL and DirectX normal map formats
Choice of Sobel or Scharr gradient filters for different texture quality
Free with no advertising, AI model, or payment system
Interactive material lighting preview to verify results
AI integration with your own AI via MCP, not built-in
Local-first architecture keeps your data on your device by default
Extensible platform with marketplace and custom extensions
Normal Map Bench
Drawdy