If the font is not embedded, replace the missing CID font with a free alternative.
| Internal CID Alias | Typical Original Font | Free Replacement |
|--------------------|----------------------|------------------|
| /F1 | HeiseiMin-W3 (Japanese Mincho) | Noto Serif CJK JP |
| /F2 | HeiseiKakuGo-W5 (Japanese Gothic) | Noto Sans CJK JP |
| /F3 | AdobeSongStd-Light (Chinese) | Noto Serif CJK SC |
| /F4 | AdobeHeitiStd-Regular (Chinese) | Noto Sans CJK SC |
| /F5 | HYGoThic-Medium (Korean) | Noto Sans CJK KR |
| /F6 | Courier (monospaced fallback) | Courier Prime (open source) |
| /F7 | Helvetica / Arial | Liberation Sans |
noto_path = "/path/to/NotoSerifCJKjp-Regular.otf"
for page in doc: for block in page.get_text("dict")["blocks"]: for line in block["lines"]: for span in line["spans"]: if span["font"] in ["F1", "F2", "F3", "F4", "F5"]: # Insert replacement font page.insert_font(fontfile=noto_path, fontname="F1_Replacement")
import fitz # PyMuPDF
| If you need… | Do this… |
|--------------|-----------|
| To fix a PDF missing F1–F7 | Use Noto CJK or Source Han as replacement |
| The original Adobe fonts (legal) | Buy from Adobe Fonts (subscription) or check if included in your Adobe plan |
| A free download of any CJK font | Get Noto CJK from Google Fonts – it covers all weights and languages |
| To understand F1 on a specific printer | Check the printer’s firmware manual – those numbers are hardware‑dependent |
CID is a font organization method; OpenType is a container format. Many CID-keyed fonts are delivered as OpenType files (.otf). You aren’t choosing one over the other.
The terms F1, F2, F3, F4, F5, F6, and F7 are essentially ghost names—technical placeholders used by software to display text, not the actual names of font families you can download.
While CID technology is standard for high-end typography, specifically for Asian languages, "Free Downloads" of professional CID fonts are generally illegal or technically non-functional without accompanying software licenses. For a free, legal, and robust solution, designers are encouraged to download the Google Noto font families, which provide superior CID-based language support at no cost.
The search for "CID font F1 F2 F3 F4 F5 F6 F7" typically arises when a user encounters errors in a PDF reader stating these fonts are missing or cannot be found.
These are not specific, downloadable commercial font names like Helvetica or Times New Roman. Instead, they are placeholders or internal identifiers used by PDF creation software (like Microsoft Print to PDF) when a font is subsetted and embedded in CID (Character ID) encoding. What These Font Names Mean
Placeholder Names: When a PDF is generated, the software may rename the fonts internally to F1, F2, F3, etc., to manage character sets, especially for complex or multi-byte scripts like Asian languages.
Missing Mappings: If you see an error for "CIDFont+F1," it usually means the PDF was created without fully embedding the font data, or the encoding (often "Identity-H") is corrupted.
Common Identities: Frequently, F1 corresponds to Arial Bold and F2 to Arial Regular, though this varies depending on the original document's layout. Solutions for Missing CID Fonts CID font F1 F2 F3 F4 F5 F6 F7 Fonts Free Download
Since these aren't "real" fonts you can download from a font library, you cannot simply install them. Use these methods to fix the display issues: Use Adobe Acrobat's Preflight Tool Open the PDF in Adobe Acrobat Pro. Go to Tools > Print Production > Preflight.
Select Embed missing fonts and click Analyze and fix. This will attempt to re-embed the required data from your system fonts. Flatten Transparency
If you are using Adobe Illustrator, you can "Flatten Transparency" and check the Outline Text option. This converts the text into shapes, removing the need for the font file entirely. Print to PDF (Again)
Open the file in a browser (like Chrome) or a basic viewer like macOS Preview and select Print > Save as PDF. This often re-encodes the document and resolves the missing CID resource error. Replace with Standard Fonts
If the text is editable, use an editor like Smallpdf to manually change the font from the "F1" placeholder to a standard system font like Arial, Calibri, or Myriad Pro. CID+ Fonts - Adobe Community
"CIDFont+F1," "F2," "F3," and so on are not actual font names that you can download; they are temporary placeholders
created by software (like Adobe Acrobat or Illustrator) when it cannot find or correctly embed the original fonts in a PDF. Google Groups Why You Can't Download Them Because these are generic labels, "F1" in one PDF might be , while in another, it could be Times New Roman
. There is no single "F1 font" file to install because the software just assigns these tags to whatever font was originally used but is now "missing" or "subsetted". Super User How to Find the Real Font Names
To find the actual fonts you need to download, you must identify what they were originally called: Check PDF Properties : Open the file in Adobe Acrobat Reader (Windows) or (Mac), and click the
tab. This often lists the original font names next to the placeholders. Common Substitutes
: Many users have found that these placeholders often map to standard font families: : Often maps to (Regular/Bold) or Times New Roman Other common matches Myriad Pro Document Info Adobe Acrobat Pro , you can use the Object Inspector
(under Print Production > Output Preview) to click on specific text and see its original properties. How to Fix the "Missing Font" Error If the font is not embedded , replace
If you are seeing dots or strange characters instead of text, try these workarounds:
Acrobat: How to Identify All Fonts Used in a PDF (Video Tutorial)
The Mystery of the "Missing" CID Fonts: F1 through F7 In the world of digital publishing and PDF management, few things are as frustrating as opening a document only to be greeted by a "missing font" error for generic-sounding names like CIDFont+F1
. To the uninitiated, these seem like specific, high-end typefaces that require a "free download" to fix. In reality, these names are not commercial font brands but rather internal placeholders
or technical labels generated during the PDF creation process. 1. What are CID Fonts? CID-keyed font
(Character Identifier font) is a specialized format developed by Adobe to handle large and complex character sets. While standard fonts are often limited to 256 characters (fine for most Western languages), CID technology supports over 65,000 glyphs
, making it essential for East Asian languages (Chinese, Japanese, Korean) and multi-lingual documents.
It is important to understand that "CIDFont+F1" through "CIDFont+F7" are not names of downloadable commercial fonts
. Instead, they are generic labels used by PDF software to describe fonts that were not properly embedded or were renamed during the PDF creation process.
Because these names are internal placeholders, you cannot "download" them as a specific font family like Arial or Times New Roman. However, you can fix the errors they cause by identifying and substituting the original fonts. Common Mappings for CIDFont F1–F7
In many cases, these generic names correspond to standard fonts that your system likely already has. Expert users and developers have identified the following common mappings: Placeholder Name Likely Original Font CIDFont+F1 Arial (Bold) or Times New Roman (Regular) CIDFont+F2 Arial (Regular) or Times New Roman (Bold) CIDFont+F3 Arial (Italic) CIDFont+F4 Arial (Bold Italic) CIDFont+F5 Times New Roman (Italic) CIDFont+F6 / F7 Symbol fonts or specific non-Latin script characters How to Fix "Font Cannot Be Found" Errors
If you are seeing errors when opening or editing a PDF with these font names, try these solutions: Open in Preview and Re-Export : On macOS, opening the file in and selecting File > Export as PDF often "flattens" the font data and makes the file readable. Substitution in Adobe Acrobat This architecture allows for massive font files containing
Searching for "CIDFont F1" or "CIDFont F2" to download is not recommended and potentially unsafe
, as these are not the names of real fonts. Instead, they are generic labels assigned by PDF software when it cannot identify or embed the original font. Creative COW What "CIDFont F1 F2 F3..." Actually Are
These names are temporary placeholders used by PDF generators: Creative COW Missing Data
: When a PDF is created without embedding the full font, the viewing software replaces the original name (like Arial or Times New Roman) with a generic CID (Character Identifier) tag. Common Mappings : Frequently, maps to a variant of Times New Roman (e.g., Bold), and maps to the Encoding Tool
: CID is an encoding system designed to support large character sets, often for Asian languages or complex symbols. Risks of "Free Download" Sites
Websites offering "CIDFont F1 Free Download" are often misleading or malicious: Security Risks
: Files from these sites may trigger virus scanners or contain malware.
: Since these aren't real font files, downloads from unofficial sources may just be bundled unwanted software. How to Fix the Issue
If you are seeing "CIDFont+F1 cannot be created or found," you do not need to download a font with that name. Instead, try these solutions: CID+ Fonts - Adobe Community
The font CIDFont+F1 is Arial (blod) and CIDFont+F2 is Arial (Regular)
Here’s a structured guide to understanding CID fonts (specifically F1, F2, F3, F4, F5, F6, F7) and how to find free, legitimate downloads.
CID stands for Character Identifier. It is a font format developed by Adobe Systems specifically to address the complexities of languages with large character sets, such as Chinese, Japanese, and Korean (often referred to as CJK fonts), though they are also used for specialized Latin fonts.
Unlike standard fonts (like TrueType or OpenType) that rely on a standard encoding (like Unicode or ASCII), a CID font does not have a fixed mapping. Instead, it uses:
This architecture allows for massive font files containing thousands of characters to be rendered efficiently, as the system only needs to reference the specific IDs required.