Borderless printing

Thanks Gary Scotland, very helpful and it did indeed solve my problem, thanks a million!

My Epson ET-2750 Series does borderless printing and I managed to get that by following your suggestions:

1- Change Keynotes slide size:

Document > Document tab > Slide size > Custom Slide Size > Width 3508 pts (was 1024 pts before), Height (was 768 pts before)

2- Set printer to borderless printing:

Print Menu > Page Attributes > Paper Size > A4 Borderless

There is an additional option in Paper Handling which I did, however, not need:

Paper Handling > Scale To Fit Paper Size: on + Destination Paper Size: A4 Borderless

Correction:

I would like to print a keynote presentation exactly the way I created it, i.e. without any white borders.

I tried 2 options:

1. File > Print in Keynote > Papersize A4 borderless
2. Export as pdf

Both options resulted in a white border printed on the left and right side of the presentation.

What am I doing wrong? My Macbook currently operates on macOS Sonoma 14.0.

Thx for suggestions how to solve the issue.