What do Trim, Bleed, Crop, and Media size mean?

Trim size is the finished edge after cutting. Bleed size includes artwork that extends beyond that edge. Media size covers the full PDF page, while Crop size controls the area a PDF viewer displays. Set an explicit Trim size when you export your PDF. If the file has no Trim size, we can use its Media size only when that matches one of our active standard paper sizes.