Duotone Effect Online Free - Two Color Photo Editor
Create a duotone effect by mapping image shadows and highlights to two custom colors. Use presets, tune contrast, preview instantly, and export your duotone image as PNG, JPG, or WebP.
Drop your image here to create a duotone effect
Map image shadows and highlights to two custom colors.
Supports JPG, PNG, WEBP. Paste an image with Ctrl+V.
What Is a Duotone Effect?
A duotone effect maps the dark and light areas of an image to two selected colors. Shadows become one color, highlights become another, and midtones blend between them. This creates a bold two-color image style for posters, album art, landing pages, and social graphics.
Two-Color Mapping
Choose a shadow color and a highlight color. The tool reads image luminance, then maps each pixel to a blend between your two colors.
Preset Duotone Palettes
Start from ready-made color pairs, then adjust with color pickers. This is faster than building a two-color photo effect from scratch.
Luminance-Based Workflow
Duotone depends on brightness structure. For a neutral luminance-only result before styling, use grayscale image.
Different from Inversion
Duotone recolors tones into a two-color palette. It does not mathematically reverse RGB values. For single-color opposites, use the invert color tool.
Private Browser Processing
All duotone processing runs locally with Canvas API. Your photo stays on your device and is not uploaded to a server.
Multi-Format Export
Download the final duotone image as PNG, JPG, or WebP. Use PNG/WebP for transparent graphics and JPG for compact photo sharing.
Best Uses for a Duotone Photo Editor
- +Create brand-colored hero images, thumbnails, and social graphics
- +Turn portraits and product shots into bold two-color posters
- +Experiment with album-cover, editorial, and Spotify-style image treatments
- +Apply repeatable color palettes without opening desktop image-editing software
Map Shadows and Highlights to Two Custom Colors
Start Fast with Preset Duotone Palettes
Control Tone Contrast for Cleaner Graphic Results
Export Duotone Images for Web, Social, and Design
Frequently Asked Questions About Duotone Effect
Learn how duotone image editing works, how to choose colors, and how this effect differs from grayscale or color inversion.
How do I create a duotone effect online?
Upload an image, choose a shadow color and highlight color, adjust tone contrast, then download the result as PNG, JPG, or WebP.
What is a duotone image?
A duotone image maps the original photo's dark and light tones to two colors. Shadows use one color, highlights use another, and midtones blend between them.
What colors work best for duotone photos?
High-contrast pairs work best, such as navy and cyan, black and amber, purple and pink, or dark green and lime. Start with a preset, then adjust the colors to match your brand or design.
Is duotone the same as grayscale?
No. Grayscale removes color and keeps neutral gray tones. Duotone first reads the image's brightness structure, then maps that structure to two custom colors.
Is duotone the same as color inversion?
No. Color inversion subtracts RGB values from 255. Duotone uses luminance to recolor the image into a two-color palette.
Can I export duotone images with transparency?
Yes. PNG and WebP output preserve alpha transparency. JPG output fills transparent areas with white because JPG does not support transparency.
Is this duotone photo editor private?
Yes. The duotone effect is applied in your browser with Canvas API, so your image is not uploaded to a server for processing.
Duotone Effect Online Free - Start Now
Create two-color duotone photos with custom palettes, instant preview, and private browser-based processing.
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