PDFs are great when you plan to print at home or at any office supply chain or copy and print center. Corjl PDFs are formatted onto a standard sheet of paper (typically 8.5"x 11" in the US) and ready to print on your home or office printer. Any raster images on the template will automatically download at 300 dpi.
JPG
You’ll likely need to use the JPG format when you’re having your designs printed online or at a professional print shop. The reason for this is mostly due to the bleed and the requirements of the printers. You typically will not want to use JPG when printing at home.