Free: Original view, Temperature map, Value structure, Saturation map, Palette and Harmony for every image, 20 analyses at a time. Lifetime Premium: one-time purchase includes Composition guides, Contrast map, tinted value bands, unlimited history, full-res export. No subscription.
Key features
Generate unique professional signatures from text prompts with various styles
Extract handwritten signatures from photos with AI precision
Remove backgrounds from signature images for transparent PNG files
Create professional PNG signatures ready for immediate use
Sign PDF documents online with secure browser-based solution
Create multiple different signatures
Palette with proportions showing dominant colors sized by image weight
Color harmony identification (Complementary, Analogous, Triadic, Split-complementary, Tetradic, Square, Monochromatic)
Temperature map showing warm and cool distribution across image
Value structure divided into clear zones (light, mid-tone, dark)
Saturation map showing vivid and muted areas
Composition guides identifying classic guides like golden ratio and rule of thirds
Contrast map showing where the eye lands first (Premium)
Painter-friendly color names (Yellow Ochre, Payne's Gray, etc.)
Local device processing with no image uploads
Works offline with no account required
What makes it different
Sophisticated AI models that craft genuinely unique signatures capturing natural handwriting flow
Text-prompt based signature editing for intuitive modifications
Intelligent extraction and enhancement of authentic handwritten signatures
Shows color proportions, not just colors, recognizing that a 60/5 split is fundamentally different from 50/50
Four layers of analysis together show relationships single layers cannot reveal
Built by people who actually mix paint with painter-friendly vocabulary
Lifetime Premium with single payment, no subscription model
All data stays on device, no account signup required
Undertone