[EN] A Type0 font has no encoding entry

Description

A Type0 font (Composite Font) is missing an encoding entry for character mapping.

Type0 fonts in PDF files are composite fonts that act as containers for CID-keyed fonts, such as CIDFontType0 (PostScript) or CIDFontType2 (TrueType). The Encoding entry is essential for Type0 fonts because it defines the mapping between character codes and glyphs. Without this entry, characters cannot be correctly interpreted or displayed, leading to rendering issues or missing text.

Common Causes

• Faulty export: The PDF was generated incorrectly, e.g., by software that fails to insert the encoding entry properly.

• Manual editing: Interventions in the PDF removed or corrupted the encoding entry.

• Non-standard fonts: Some fonts that are not embedded or improperly declared can cause encoding entry issues.

• File corruption: A damaged PDF may lose metadata such as encoding entries.

Suggested Solutions

1. Check with a Preflight tool

   • Open the PDF in Adobe Acrobat Pro or another Preflight tool:
     Tools > Print Production > Preflight

   • Inspect fonts and their attributes. Missing encoding entries will appear in the error log.

2. Re-embed fonts

   • Export the PDF from the original source with the correct font settings:
     Enable “Embed all fonts”.

   • Ensure Type0 fonts are correctly embedded and configured.

3. Regenerate the PDF

   • If the file is severely damaged or the error cannot be fixed, regenerate the PDF from the original file.

   • Ensure export software is properly configured.

Reference:

• x [EN] Overview – Syntax errors in the PDF page description