Not all layers are equal. In a print-ready PDF, a handful of layer types carry most of the production meaning. Knowing them makes a handed-off file far less mysterious.
The five that come up most
- Spot – a named spot color, often a brand ink or Pantone.
- Clear – a varnish or clear-coat pass.
- Cut – the cut/contour line for finishing.
- Print – the main printed artwork (the base).
- Info – notes, registration marks and instructions, not meant to print.
Why separation matters
When these are merged, you lose the ability to send the cut line to the cutter, the varnish to its pass, and the print base to the press independently. Keeping them as separate files preserves the production intent the original designer built in.