JPG is the most popular image format today, developed by Joint Photographic Experts Group (JPEG). With good compression and support for 24-bit color depth, JPG / JPEG files are used in almost all digital cameras and cameras. Also, the JPG format is very widespread on the Internet, almost always used by web developers, because compression can significantly reduce the size of images. The compression ratio can be different - the larger it is, the smaller the file size, but the worse the quality, and vice versa. The disadvantage of the format is the lack of transparency support.
The Portable Document Format (PDF) is a versatile file format that preserves the fonts, images, and layout of the original document, regardless of which of many platforms and which of many applications the document was created on. It was initiated by Adobe and was originally intended for electronic presentation of printed materials. PDFs look the same no matter what device they are viewed on. Whether you're using Windows 10, Mac, Chrome OS, Android, Windows Phone, iPad, or Windows XP - on any software or hardware, PDFs remain the same.