The foregoing right includes the right to show the Apple Font in screen shots, images, mock-ups or other depictions, digital and/or print, of such software products running solely on iOS, iPadOS, macOS or tvOS. Subject to the terms of this License, you may use the Apple Font solely for creating mock-ups of user interfaces to be used in software products running on Apple’s iOS, iPadOS, macOS or tvOS operating systems, as applicable. You are prohibited from using SFFont for anything but simulating System UIs in mockups. If you're still reading, I suggest you/your lawyer review the readMe* ( deployed during installation) that comes with the download/package. this means converting each SF Font to a web font format. >Can I use the San Francisco Fonts as web fonts?. Some new, emerging technology, I think? Puts Actual Coding to shame, I hear. >For those who do not understand Web Development RU sure? You're starting to sound like a lawyer, you know, 'cause of all that ' loss of life and property' legalese. Could be worse, tho, you could be a lawyer.