The Fonts tab shows the fonts used in the documents in your current pdfFactory session and allows you to embed them in the PDF file.  Here are some things to consider in deciding whether or not to embed fonts:

• Do you care about the specific fonts used in the document?  If yes, embed the font.
• Does the recipient of the document have the font on their system?  If the user is a Windows user and you are using fonts generally found on Windows computers, there is no need to embed.
• Will the PDF viewer make a reasonable substitution for fonts that do not exist on the recipient system?  The PDF viewer will substitute fonts.  If this is acceptable, there is no need to embed.
• Embedding fonts increases the size of the PDF file meaning it will take longer to download from an email message or from the web.

pdfFactory will remember the list of fonts you decide to embed and will embed them by default in subsequent documents.  You can list all of your installed fonts and select those to be embedded.  When a document contains the font selected, it will automatically be embedded.