Duotone Image Generator
Create duotone images online for free — map any photo onto two colours for the bold, graphic look made famous by music and brand campaigns. Pick from 8 presets or your own shadow and highlight colours, adjust contrast and brightness, and download full-resolution PNG or JPG — or copy an SVG filter for your website.
100% private — everything runs in your browser. Conversion happens on your device; nothing is uploaded.
SVG filter for websites
Duotone maps every pixel’s brightness onto a gradient between your two colours — dark areas take the shadow colour, light areas the highlight. Downloads are full resolution. Your photo never leaves your device.
How to make a duotone image
- Drop your photo in the box.
- Pick a preset or choose shadow and highlight colours.
- Adjust contrast and brightness.
- Download PNG or JPG, or copy the SVG filter.
What you can use it for
- Create bold social posts and campaign visuals
- Make photos match your brand colours
- Design posters, album covers and event graphics
- Unify mismatched photos on a website
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See all free image tools →Frequently asked questions
What is a duotone image?
A duotone uses just two colours: the darkest parts of the photo become one colour and the lightest the other, with smooth blends in between.
Which photos work best?
Photos with clear contrast and a strong subject — portraits, architecture and silhouettes. Increase contrast for a punchier result.
How do I use it on a website without editing images?
Copy the SVG filter, paste it once into your page, then add filter: url(#duotone) to any image in CSS.
Is the download full resolution?
Yes — the downloaded file is the same size as your original photo.
Is my photo uploaded?
No. Everything happens in your browser.