pngtoolskit.org
PNG and image utilities, in the browser
Say hi →

Change a PNG's Color Tone (Duotone)

map the image onto one colour · pick the tone · batch

Recolour an image as a single-tone duotone — the shadows take your chosen colour and the highlights fade to white, the striking effect you see on modern posters and album covers. Pick a colour, drop your files, and download. Runs in your browser; transparency preserved.

Drop images here

Multiple files allowed

    no files
    Ready.

    How duotone works

    Each pixel's brightness is measured and re-mapped: dark areas take your colour, bright areas move toward white, and mid-tones blend between. Because it's driven by luminance, the image keeps its structure while adopting a single, unified colour identity — great for a cohesive brand look across many photos.

    FAQ

    How do I make a duotone image?

    Drop an image, pick a tone colour, and click Apply — the image is re-mapped onto that colour. It runs in your browser.

    Can I get the classic brown look?

    Pick a warm brown, or use the dedicated Sepia tool for the standard vintage tone.