We are running into occasional problems with people opening PDFs in our web-based software. I am wondering if one possible cause is that we are still saving the PDFs we create to have Acrobat 5 (PDF 1.4) compatibility. The main reason we were still doing this is to ensure that the PDFs could be opened in Preview on Mac.
To help us check into this, I'd like to know the following. I've searched extensively on the web but I've found nothing.
-What PDF versions can Adobe Reader 11 open? In other words, what versions does it support?
-What PDF versions can Preview on Mac open for OS 10.5, 10.6, 10.7, and 10.8?
-What PDF versions can Safari open with its native PDF support?
I realize this is a lot. I'd love to get a response from an Adobe rep or certified export, or if any of you know of a resource that has this information, I'd appreciate it.
Tammy