It’s also a great format for storing these images on devices with limited storage capacities, such as older mobile devices or tablets. You can upload and share the lossy compressed images that come out from the JPG converter online with ease. Other elements, such as your PNG images’ transparent background and color palettes, will be kept as close to their original form as possible. We eliminate repetitive patterns and thereby reduce the file size of your images to the smallest possible size while maintaining the highest quality. Smallpdf is an expert on many things, but our first core function was file compression-it’s in the name. As you can see above, turning a PNG into a JPG is no different: You first convert the PNG to the Portable Document Format (PDF) and then save it again to a JPG. All of our conversions use this format as a bridge to help you get things done. At Smallpdf, the PDF format is the key to success.