Products from Visual Integrity are designed to convert all well-formed PDF files. If a PDF file was created in an application, it should convert successfully in either vector or image mode. However, if a PDF file was created by a scanner and has already been reduced in the process to a flat image, it will only convert in image mode. If you encounter a file that does not convert or returns errors, send it to us so we can troubleshoot it. These problems are most often caused by poorly formed PDF files.