The creator of the PDF did not include the font file inside the PDF, expecting your computer to already have it [1].
: The "F1, F2, F3..." labels are typically assigned in the order the fonts appear in the document. For instance, in one file "F1" might be Arial Regular , while in another it could be Times New Roman Bold The "CID" Prefix : "CID" stands for Character Identifier cid font f1 f2 f3 f4 f5 f6 f7 fonts free download link
is a technical way PDFs handle large character sets, often for Chinese, Japanese, or Korean (CJK) text, though it's used for Latin fonts like Arial too. F1, F2, F3 labels The creator of the PDF did not include
You should not download these from third-party sites. You can find them in the Fonts folder of any AutoCAD installation or the free AutoCAD TrueView official download from Autodesk. 2. Adobe Asian Language Packs F1, F2, F3 labels You should not download
Finding "CID Font F1, F2, F3..." free download links is a common quest for designers and architects, but these aren't actually specific "brands" of fonts like Helvetica or Roboto. Instead, these are used by software—most notably AutoCAD and Adobe Acrobat—to identify embedded font data.
github.com/unicode-org/cjk-cid-fonts (Unofficial archive of free/open CJK CID fonts)