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imazen / imageflow

High-performance image manipulation for web servers. Includes imageflow_server, imageflow_tool, and libimageflow
https://docs.imageflow.io/
GNU Affero General Public License v3.0
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WebPLossy colour is desaturated? #588

Closed JayVDZ closed 3 years ago

JayVDZ commented 3 years ago

Hello. When using the WebPLossy encoder preset over MozJpeg, the image seems quite desaturated. I've checked this with a few images, but it's most noncable in the example below (jpeg left/webp right):

https://1drv.ms/u/s!AlJ8J3Tnj5ejjdlyBl1w5V00bymeRg?e=5FOQdg

Is this expected? Do I need to adjust a colour profile or something? Thanks.

lilith commented 3 years ago

It probably is a color profile issue. I'd inspect the two images to see what profiles are attached, and then check your monitor profile.

Also looks like you're using two different apps. If you open them both in Chrome do you still see the issue? Different apps might apply different default color profiles.

On Sun, May 23, 2021, 9:38 AM Jay Van der Zant @.***> wrote:

Hello. When using the WebPLossy encoder preset over MozJpeg, the image seems quite desaturated. I've checked this with a few images, but it's most noncable in the example below (jpeg left/webp right):

https://1drv.ms/u/s!AlJ8J3Tnj5ejjdlyBl1w5V00bymeRg?e=5FOQdg

Is this expected? Do I need to adjust a colour profile or something? Thanks.

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JayVDZ commented 3 years ago

Thanks Lilith. You're spot on with the different-app point. Loading them both in (new) Edge showed them the same, desaturated. Even the original image. I think it's my monitor profile (it's meant to be set to SRGB). Sorry to bother :)