These are not specific high-quality fonts you can download from a website. Instead, "CIDFont+F1" is an used by PDF software when a font is embedded but its original name is hidden or lost during the export process.
Disclaimer: This guide is for educational purposes. Always respect software licenses. While Noto and Source Han are free for commercial use, always verify the license of any font you download.
: Included with Creative Cloud subscriptions; often contains the exact fonts used in professional PDFs. 1001 Fonts : Offers a variety of free-for-commercial-use typefaces. Troubleshooting "Missing CIDFont" Errors These are not specific high-quality fonts you can
For (including F1–F7‑like coverage):
Professional grade, highly legible on screens, and completely free for commercial use. Adobe Source Han Sans Always respect software licenses
Instead of mapping a character directly to a keyboard key or a standard character code (like ASCII), a CID font uses a registry index (a Character Identifier) to find the correct visual shape (glyph). This allows a single font file to contain tens of thousands of unique characters without crashing your system. Decoding the "F1" to "F7" Labels
However, the technology is very much alive . Many of the open-source CJK fonts you use today, such as Adobe’s own Source Han Sans and Source Han Serif, are initially designed and built as CID-keyed fonts. Font developers use the powerful CID framework to construct these massive typefaces and then compile them into the final OpenType files that you install on your computer. 1001 Fonts : Offers a variety of free-for-commercial-use
Google’s Noto project aims to support all languages across the globe. It is the ultimate replacement for missing CID fonts.
If you are looking for high-quality fonts for your projects, consider these reputable platforms for free, legal downloads: Which font type? - Adobe Community