* just came (again) across an issue spotted some times ago we didn’t solve at that time – if you don’t know what we are talking about you might like to read this post: On Wordpress image resizing that explains visually the issue:
When using the auto generated images from wordpress, they are completely desatured compared to the original uploaded images.
The only way we found was to actually use images without any profile. You will have to edit your images in your favourites image editing software without any profile.
Photoshop users: Edit > Assign Profile > Don’t Color Manage This Document > Ok
Profiles are used to optimise image according to the medium they are displayed with.
Wordpress use imagecopyresampled from the PHP GD Library to generate the thumbnails (thumb, medium, large). GD is a sort of library that extends PHP language and allow it to manipulate image data in a simple way; unfortunately GD does not support profiles and any profile submited within an image will not only be ignored but also discarded.
** i would happilly receive any recommendation for image editing alternative on OSX, eventually open source (dont tell me Gimp) and procedure to discard profiles…
*** the Images look faded topic on WP forum being closed, we thought it might be helpful to someone else…