Reply To: What are the use of bleed marks?

If PDFs are exported as Layered PDFs, the print vendor can more easily make the Marks layer non-printing/”off”, though getting a print vendor to recognize that a file is layered can be tough (because it’s so uncommon.)

I might also clarify: larger, more savvy print vendors with prepress systems probably prefer no marks (but the PDF still contains all Trim Box, Bleed Box, etc.)

Smaller, less savvy printers who ‘just do it the way we’ve always done it’ might freak out if there were no visible crop marks to confirm the artwork is correctly constructed.