When a PDF is created, if the original font (like Arial or Times New Roman) is not properly embedded, the software assigns generic labels like "CIDFont+F1" or "CIDFont+F2" to the text. These are often subset fonts where only the specific characters used in the document are included. Why You See These Names Missing Embedding : The PDF was exported without the original font file. Generic Placeholders
: "F1" through "F6" are just arbitrary markers for different font weights or styles used in that specific file (e.g., F1 might be Regular, F2 might be Bold). Security/Size
: Some apps use these randomized names to ensure font subsets don't overlap when merging multiple PDFs. How to Fix "Missing Font" Errors
Because these "fonts" don't exist on your computer, you cannot "install" them. Instead, you can try these workarounds to view or edit the file correctly: Export via PDF Printer : Open the PDF in a viewer (like macOS
or a browser) and use the "Print to PDF" or "Export as PDF" function to create a new version of the file. This often flattens or re-embeds the characters so they display properly. Convert to Outlines : If you are using Adobe Illustrator cidfont f1 f2 f3 f4 f5 f6 install
, import the file (rather than opening it directly) and use the "Transparency Flattener" to convert the text into outlines. This turns the text into shapes so you no longer need the font to see it. Substitution Adobe Acrobat , you can check the Document Properties
(Ctrl+D) under the Fonts tab. Sometimes it lists the "Actual Font" used. You can then try to replace the missing text blocks with common fonts like Times New Roman , which often match the "F1" or "F2" styles. Acrobat Preflight Preflight tool Adobe Acrobat Pro
to search for "font" and select the option to "Convert TrueType fonts to Type 1 CID" or "Convert fonts to outlines". Creative COW standard font might be a good visual match for the text you're seeing? Impossible fonts to be found / Fontes impossíveis de achar
import os
import hashlib
def validate_font_file(font_file):
# Implement font file validation here (e.g., check format, CID compliance)
pass
def install_fonts(font_files, install_path):
for font_file in font_files:
# Validate font file
if not validate_font_file(font_file):
print(f"Skipping invalid font file: font_file")
continue
# Install font file
try:
font_name = os.path.basename(font_file)
dest_path = os.path.join(install_path, font_name)
with open(font_file, 'rb') as f_src, open(dest_path, 'wb') as f_dest:
f_dest.write(f_src.read())
print(f"Installed: font_name")
except Exception as e:
print(f"Error installing font_file: e")
if __name__ == "__main__":
font_files = ["f1", "f2", "f3", "f4", "f5", "f6"]
install_path = "/custom/font/path"
install_fonts(font_files, install_path)
This Python snippet provides a basic framework for installing fonts, including a placeholder for font validation logic. A full implementation would expand on this, incorporating the deep features outlined above. When a PDF is created, if the original
The immediate cause of this error is the absence of required CIDFont definition files or an incorrect configuration in the Fontmap or cidfmap file.
HeiseiKakuGo-W5, Munhwa-Regular, etc.), but cannot find them in the font directory (e.g., /usr/share/ghostscript/fonts or C:\Program Files\gs\fonts).f1, f2, etc.) because it cannot locate the actual font data, resulting in a "install" command that effectively does nothing or fails.Solution: Use pdffonts -subst to see actual substitution. Then force substitution via Ghostscript’s -sSubstFont=....
The F1–F6 tags often correspond to these standard CIDFonts:
STSong-Light or NotoSansCJKscMSung-LightHeiseiMin-W3 or NotoSansCJKjpHYSMyeongJo-MediumDroidSansFallbackInstall the full Noto CJK fonts (covers all): Code Snippet (Simplified): import os import hashlib def
# Debian/Ubuntu
sudo apt install fonts-noto-cjk
Executive Summary
The topic "CIDFont F1...F6 install" usually arises from error messages in Adobe Acrobat (specifically versions like Acrobat 7, 8, and X) when opening, printing, or flattening PDF files. The "F" series (F1, F2, F3, F4, F5, F6) are placeholder names for generic CIDFonts used by the PDF specification to represent CJK (Chinese, Japanese, Korean) text encoding.
The Verdict: These are not standard fonts you download and install like Times New Roman. They are internal system mappings. Attempts to "install" them manually are usually futile and technically incorrect. The solution lies in repairing the Adobe installation or ensuring the source PDF is created correctly.
Step 4: Test the Installation
gs -sDEVICE=pdfwrite -o test-output.pdf -f input-with-f1-f2.pdf
No errors about missing CIDFonts means success.
Part 3: Preparing Your Environment – Tools You Need
Before installing CIDFont mappings, ensure you have the right utilities:
- Ghostscript (≥9.50) –
gs command
- FontForge – for inspecting CID-keyed fonts
- pdffonts (part of Poppler utilities) – to list fonts inside a PDF
- mkfontscale / mkfontdir (Linux) – to manage font paths
- Adobe Acrobat Pro – for manual font substitution