ImageSharp - CMYK images

Questions
1

Our editors are sometimes uploading CMYK images. But the Umbraco ImageSharp resizer makes the colors in the images very bright.
Is it possible to make ImageSharp resizer to convert the image to RGB and keep the colors.
The CMYK → RGB in Photshop works perfectly.

CMYK

A close-up shot shows an old, moss-covered thatched roof with a blurry green background. (Captioned by AI)
A close-up shot shows an old, moss-covered thatched roof with a blurry green background. (Captioned by AI)272×206 22.7 KB

RGB / after resize

image
image282×227 38.1 KB

2

Sounds like this issue:

Or this one:

3

They seem to have converters for color spaces, but I’m not sure how much control you have in the context of Umbraco and how much of ImageSharp is exposed or not.

4

Oh yeah, looks like it is more a ImageSharp and browser issue.

Uploaded CMYK images keeps their colorspace even after resizing.

But the browser show the “weird” color-version of the image.
If you show the image in the Windows Photo app it shows the the CMYK image in the “correct” way.

5

It would be nice to make the colorspace conversion with a parameter in url.
But it does not seems like it is possible :frowning:

Maybe we can hook into the ImageSharp middleware and convert the colorspace.