Duotone Image Generator
Upload an image, choose two colors, map the tones into a duotone look, and download PNG or JPG.
Your duotone image will appear here
Generate branded duotone images
Two custom colors
Pick shadow and highlight colors for posters, thumbnails, and social graphics.
Blend strength control
Mix the duotone result with the source for subtle or bold looks.
Private local processing
Your image stays in your browser. ImageConver does not upload the source file.
How it works
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1
Upload an image
Choose a browser-readable photo or design.
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2
Choose colors
Set shadow and highlight colors plus blend strength.
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3
Download
Save the generated duotone image locally.
How to choose duotone colors
Duotone works by reading image brightness and mapping dark areas to one color and light areas to another. Use a dark shadow color and a bright highlight color for stronger contrast.
For brand graphics, use a deep neutral or brand dark color for shadows and a bright accent color for highlights.
Frequently asked questions
What is a duotone image?
A duotone image maps image tones between two selected colors instead of using the original full-color palette.
Can I use brand colors?
Yes. Use the color pickers to choose exact shadow and highlight colors.
Is my image uploaded?
No. Your image stays in your browser and duotone generation runs locally.
Duotone Image Generator last reviewed: Jun 25, 2026.