Generating pdfs with pdflib all images are blurry

we are currently working on a PHP project for one of our customers where we had to increase the PHP version (5.6.40) and the version of PDFLIB (9.1.1.p3). Since then we have the problem that all images are blurred, as if there is a white veil over them. We don't understand what the reason can be, because there have been no changes in the code. before update

after Update

When I look at the pictures, two possible causes come to mind:

• The colour profile in the image is sometimes processed and sometimes not.
• an intermediate step processes the images before they are loaded and that has also changed.

It would also be good to know which PDFlib version you used before and whether the image is also manipulated on the server.

Probably the best thing to do is to open a support case directly with PDFlib support. https://www.pdflib.com/licensing-support/opening-a-support-case/

Then you can also send more details and an example PDF before and after the update. It is also best to share an example input image.