The solution is to create a Local COM server (.exe) in Visual FoxPro that can be called by the in-process server to run the report, or build the original object as a Local COM server (.exe). Are you calling this process from ASP or ASP.NET?
GhostScript is a good free alternative to Adobe Acrobat for creating PDFs. Check out http://64.152.50.10/vfpps2pdf/

>So how can in a safe way generate PDF content from VFP reports?
>
>And if exist a free option, best.
>
>Thanks for your response