Base 14 fonts are the common fonts installed as a part of the Adobe Acrobat installation.
- Times or Times New Roman - 4 versions*
- Helvetica or Arial- 4 versions
- Courier - 4 versions
- Zapf Dingbats
* (regular, bold, italic or oblique, and bold italic of each)
So if these are the 'common fonts,’ why aren't they embedded automatically?
Programs often default to the PDF setting 'Standard': this setting does not automatically embed Base 14 fonts. Because these fonts are available in Acrobat Reader, it is assumed they will be available to any viewer and embedding would add unnecessarily to the file size.
Because we are doing more than simply viewing the file (we are printing) this is why it's important to choose a PDF setting which is intended for printing purposes. The preferred PDF setting to ensure the fonts are embedded (and to have a stable, print-ready PDF overall) is PDF/X-1a:2001 or PDF/X-3:2002. If you don't have this option available, the second recommendation is High Quality Print.
Due to licensing and copyright restrictions, we do not keep a font library, therefore, we are dependent upon the publisher’s PDF files to have the embedded font information to ensure proper printing representation of the book cover or interior.