Saving psd files to a pdf document -borderless

[racheli081020]

Hi there, I'm trying to make a multi-page PDF document. I have several psd files (Flattened) that I'm putting into Automate>PDF Presentation, to Export them as a PDF Multi Page Document. I've reasearched all over the web, for hours now, and cannot find a way to create my Pdf multi page document so that it does not have white boarders. My original files are 8.5x11 300dpi. How can I create this pdf presentaion without the white boarders?  

It would appear from my hours spent trying to solve this, that it is a common problem, but I have yet to read a forum with a solution that works.

Using MacOSbigsur, and Photoshop 2021.

Many Thanks.

Rachel

[Bojan Živković]

Can you post screenshot with problem visible?
Do you see tiny white border around images when previewing in some specific software? Perhaps that is how software is set to show files?