The PDF portfolio contains black and white photos that are disappearing.

[Frédéric5E72]

I have an 18MB photo portfolio on a PDF that includes both color and black and white photos.
However, when I save it as a reduced size or optimized version, the black and white photos appear as blank pages.

Can you help me with this issue?

[Luke Jennings3]

Are you using Acrobat or Reader to view the pdf? Here is a link to a recent related discussion:

https://community.adobe.com/t5/acrobat-discussions/acrobat-pdf-received-showing-blank-pages-when-ope...

[Frédéric5E72]

Luke!

I use acrobat (and also preview on apple)

It works, PDF/X1a

Thank you very much indeed