True, PDFs should probably be thought more of as "image" files than editable documents. As a binary format, you need to use visual tools in order to view them.

True, PDFs should probably be thought more of as "image" files than editable documents. As a binary format, you need to use visual tools in order to view them. I have a little experience with this having built a tool to diff them: https://www.parepdf.com https://www.parepdf.com.