Image Duotone Generator (Two-Tone Graphic Filter)
Create bold, contemporary marketing visuals. The duotone effect maps dark pixels to a deep shadow color and light pixels to an energetic highlight color for album covers, posters, and hero headers.
How to Use Image Duotone Generator
Upload Photo
Drop any photo or graphic into the canvas.
Pick Two Colors
Choose a shadow color (for darks) and a highlight color (for brights), or choose a curated preset.
Download Graphic
Save your high-impact duotone artwork in PNG or JPEG.
About Image Duotone Generator
Converts each pixel to perceptual grayscale luminance L = 0.299R + 0.587G + 0.114B, then linearly interpolates between the selected shadow color (L=0) and highlight color (L=255).
Supported Formats
Operational Limits
- •High-contrast source images produce the most dramatic and defined duotone results.
Key Features
- Custom color pickers for both shadow and highlight stops
- Curated duotone presets: Cyberpunk (Neon Pink/Cyan), Spotify Green/Navy, Sunset (Purple/Orange), Electric Blue/Yellow
- Contrast and midtone balance tuning controls
- Real-time canvas re-indexing algorithm
- Full original resolution export
Frequently Asked Questions
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