- What kind of PDF?
- Why are you using PNG?
- What is the target of your PDF?
1. PDF 1.3
2. There's an image that's not square
3. For a poster
I think the issue was with the image. I re-placed the image and it seems to be working now. I was working off of a poster someone else had used last year.
Why are you using a PNG?!!!!!!!
I mean you should use a different file type. PNG is terrible when you want to print the file. Use PDF or PSD instead.
Except for apps I would recommend not to use PNG in any case in InDesign.
The entire file is indd with a png image placed on the indd poster (among other images and text). I was trying to export it to a PDF for printing.
As I wrote: DON’T USA PNG here.
Where does the PNG come from?
When you export the PDF you can keep the transparency live by using the PDF/X-4 preset. PDF 1.3 flattens all transparency.