Add a duotone effect to a photo

Give a photo a bold two-colour look, with one colour for the shadows and one for the highlights. Pick a preset or choose your own brand colours.

Drop an image hereAdd an image

JPG, PNG, WebP, GIF or AVIF, up to 80 MB. You can also paste an image.

Result previewOriginal image

Processed on your device. Your image is never uploaded.

How it works

  1. Your browser works out how bright each pixel is.
  2. The darkest tones take the shadow colour, the lightest the highlight colour, and everything in between a blend of the two.
  3. The result is blended with the original by the intensity you choose, then saved.

Supported formats

Opens
JPG, PNG, WebP, AVIF, BMP and GIF (the first frame of an animation)
Saves
The same format, or JPG, PNG or WebP
Limits
Files up to 80 MB. The saved image can be up to 16.7 megapixels on iPhone and iPad, 36 on Android and 64 on computers, and 16,384 pixels on its longest side.
  • Tones are mapped by brightness, from the shadow colour to the highlight colour.
  • Transparency is kept.
  • Metadata such as camera details and location is not copied to the new file.

Your image stays on your device

This tool runs entirely in your browser. The image is never uploaded, so there is nothing for us to store, see or delete.

To check, open your browser’s developer tools, switch to the Network tab and use the tool: you will not see your image being sent anywhere.

Questions

Are my images uploaded anywhere?

No. The image is read and processed by your own browser. Nothing is sent to our servers, so there is no copy of your image anywhere but your own device.

Which photos work best?

Photos with clear contrast and a simple subject, such as portraits or architecture. Raise contrast first with Brightness & Colour if the result looks flat.

Can I use my brand colours?

Yes. Set Shadows to your darker brand colour and Highlights to the lighter one. Dark shadows with a bright highlight give the strongest look.