Depends on what you mean with
directly .
If it's a JPEG, GIF, PNG, or BMP file, there are 2 possibilities:
1. send the file to Amazon for conversion;
2. convert the file
yourself to a PDF file with
PDFill PDF Tools ("9. Convert Image to PDF") ;
BTW, always safe your screenshots as PNG files,
not as a BMP files: the quality is the same, but the size is much smaller.