Preflight Success: Tips for Designers and a Free Preflight Checklist
Acrobat Diagnostic Tools
- Document Properties: The Document Properties dialog box is a great way to quickly determine how a PDF was created (File>Properties). The Document Properties dialog box also contains other document information such as PDF version, security settings, and whether all fonts have been embedded. The Fonts section of the Document Properties dialog box lists all of the fonts used in the PDF file and whether or not they have been embedded. When scrolling through the list of fonts, if Embedded or Embedded Subset is not listed next to the font, then the font was not embedded in the PDF.
- Output Preview: The Output Preview tool in Acrobat Professional can be used to preview overprints and separations in a PDF. Here you can see at a glance all of the colors used in the document. Colors can be toggled on and off to show where and how they are being used in a document. Output Preview is a great way to make sure that black text is set to overprint simply by toggling the black channel on and off. If a white knockout of the text shows up when the black is turned off, it hasn’t been set to overprint. If the background color shows up solid, then the black text has been set to overprint properly. It’s also an easy way to make sure same spot color hasn’t been specified multiple times with slightly different names. Output Preview also provides feedback on the color build of any object when the cursor is dragged over that area.
- Overprint Preview: As with InDesign, Overprint Preview shows how inks will interact with each other on press. If the preview shows something that isn’t how the file should print, it gives you the opportunity to repair it before sending it off to your print service provider. Overprint Preview is turned off by default (both in Acrobat and the free Adobe Reader) and must be activated in the preferences of each application. Select Acrobat (or Reader)>Preferences>General. Next, select Page Display from the list. In the Use Overprint Preview pull-down menu, choose Always.