Allows you to check if the composite fonts in the document are completely embedded.
Composite fonts (also called “double-byte” fonts) enable you to display special characters of foreign languages, e.g. Asian languages. They are also called double-byte fonts because every character is determined by 2 bytes (16 bits). Double-byte characters may not always be supported in a later stage of the PDF workflow.
Embedding fonts in a PDF document means that every character of this font is copied and stored in the PDF document. This is useful if you create PDF documents to be displayed on different systems and to be printed on different devices: these are often systems that do not contain exactly the same fonts.
Also, if a font has been completely embedded, you can still edit the text in the PDF file that uses the font in question, even though the font has not been installed on your computer.
Embedding a font as a subset means that only those characters of the font that are actually used in the text are embedded. This reduces the file size by not including superfluous font information. Moreover, you may not want to embed composite fonts completely, because they may contain several thousands of characters and the majority of them will not be used anyway.
No automatic fix provided.