PDF documents can be exported using many different settings depending on the desired output destination (print, web, etc.).
There are many ways to create a PDF file, but not all of them work well for professional printing. The way in which you create a PDF can dramatically alter the quality of your printing. For that reason, please refer to the following guidelines to ensure the best possible print quality.
—> We recommend using the PDF/X1a:2001 preset for printing at the Service Bureau.
When do I choose PDF export settings? It depends on the program but usually after choosing the filename, type, and location to save a popup menu will appear where PDF settings can be chosen
Recommended Changes to Settings
Marks & Bleed: Only include crop & bleed marks if the file setup for that item/product requires it. Click ‘Use Document Bleed Settings’ to include previously setup bleed, usually should be set to 0.125″(1/8″)
Output Color Conversion: Change to No Conversion & Include all Profiles
Click ‘Save Preset’ to save settings for future use