When you extract a PDF’s font dictionary, you might see:
The term is a font architecture developed by Adobe. It is designed to handle languages with massive character sets, such as Chinese, Japanese, and Korean (CJK). Over time, PDF generation software began using CID structures to handle standard Western fonts like Arial or Times New Roman to compress file sizes and optimize encoding.
CID (Character Identifier) fonts are a way of encoding font data to support large, complex character sets, particularly for languages like Chinese, Japanese, and Korean, or for fonts with thousands of unique glyphs. cid font f1 f2 f3 f4 better
If you only need to print, scale, or visually arrange the file without altering the text string, you can convert the text into pure vector shapes. This completely removes the dependency on font files. Open a blank document in . Go to File > Place and choose your problematic PDF.
(Replace F1 with a real font)
In the context of digital documents, "better" is subjective. CID fonts offer several advantages for professional publishing but come with technical trade-offs. The Advantages (Why They Are "Better")
CID fonts F1, F2, F3, and F4 are "better" because they were built for the modern, globalized digital environment where standard encoding fails. They offer superior Unicode handling, efficient file sizing through subsetting, and the ability to render thousands of complex characters, including vertical and non-Latin scripts. While they can cause, "font not found" issues in editing software due to their substituted nature, their performance in document rendering and printing makes them an essential technology in the Adobe PDF ecosystem. If you'd like, I can: Tell you how to from these fonts. Help you replace these fonts in Adobe Illustrator. When you extract a PDF’s font dictionary, you
From a font engineering standpoint, if F1–F4 are from the (same designer, same hinting, same metrics), then:
Maps input codes to a CID (a numerical ID). CIDFont: Maps the CID to the actual character outline. CID (Character Identifier) fonts are a way of
Choose for long-term archiving, which strictly requires full font embedding.