To avoid confusion with F1, F2, F3, F4 , follow these rules:
These seemingly cryptic labels are actually the backbone of how complex scripts (like Chinese, Japanese, and Korean – CJK) are processed and printed. This article will demystify the naming convention, explain how it works, and show you why it matters for your workflow. cid font f1 f2 f3 f4
: A CID-keyed font is a "composite" font that uses Character IDs (CIDs) to index glyphs, making it more efficient for languages with thousands of characters, such as Chinese, Japanese, or Korean (CJK). To avoid confusion with F1, F2, F3, F4
By understanding the relationship between the , the tag (F1) , and the CMap , you transform from a confused user into a PDF power user capable of fixing font substitution errors, optimizing print workflows, and ensuring your international documents render perfectly every time. By understanding the relationship between the , the
The labels through F4 (and beyond) are generally assigned incrementally by the PDF producer. While the exact mapping can vary between documents, they typically represent different styles or weights of the primary fonts used in the original source: