https://www.fileviewpro.com/en/file-extension-cf2/
FileViewPro is a versatile, all-in-one file viewer developed to open and handle a diverse range of file types seamlessly, including CF2 files, a format critical for designers, printers, and manufacturers. CF2, or Compound File Format 2, is commonly adopted in the packaging and printing industries for its uniform way of capturing 3D packaging designs, dielines, and folding box structures. With FileViewPro, accessing CF2 files is straightforward, removing the necessity for specialized software by enabling direct viewing, analysis, and ha