Use mutool info (from MuPDF) or pdf-parser.py:

mutool info broken.pdf | grep -i cidfont

CID-keyed fonts (CIDFonts) were created to handle large character sets—especially for East Asian languages—efficiently within PostScript and PDF workflows. This paper examines six CID font families (cidfontf1–cidfontf6), summarizes their historical design goals, and documents recent updates affecting encoding, compatibility, and performance. The aim is to provide a practical resource for font engineers, PDF tool developers, and typesetters.

If you encounter an error message or log entry stating these fonts have been updated—or if you suspect issues related to them—consider the following steps:

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Cidfontf1 F2 F3 F4 F5 F6 Updated »

Use mutool info (from MuPDF) or pdf-parser.py:

mutool info broken.pdf | grep -i cidfont

CID-keyed fonts (CIDFonts) were created to handle large character sets—especially for East Asian languages—efficiently within PostScript and PDF workflows. This paper examines six CID font families (cidfontf1–cidfontf6), summarizes their historical design goals, and documents recent updates affecting encoding, compatibility, and performance. The aim is to provide a practical resource for font engineers, PDF tool developers, and typesetters. cidfontf1 f2 f3 f4 f5 f6 updated

If you encounter an error message or log entry stating these fonts have been updated—or if you suspect issues related to them—consider the following steps: Use mutool info (from MuPDF) or pdf-parser

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