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Duotone Image Filter

Apply modern two-tone duotone gradient mapping effects to photos with designer palettes.
Local-first

Click or drag & drop photo for two-tone duotone effect

Maps shadows and highlights to modern aesthetic designer color palettes

How this tool works

What it accepts, how to use it, and where your input is processed.

Spotify-Style Gradient Mapping

Maps the shadow and highlight tones of your image to two distinct contrasting hues for high-impact editorial posters and music artwork.

Designer Color Presets

Choose from curated pairings like Cyberpunk (Neon Cyan & Violet), Spotify Classic (Hot Pink & Navy), and Sunset Gold, or pick custom hex colors.

100% In-Browser & Private

All pixel color recalculation runs locally in browser memory using HTML5 Canvas. Your photos are never sent to any external server.

Need an extra feature or found an edge case?Send Feedback

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