What's the difference between the pdf version and the original?

1, with different formats, PDF is the abbreviation of portable document format. PDF file format can encapsulate text, font, format, color, graphics and images in one file, regardless of device and resolution. JPEG is a file extension in JPEG format. JPEG is the abbreviation of Joint Photographic Expert Group, and its file name is "JPG" or "JPEG", which is the most commonly used image file format. This is a lossy compression format, developed by the Software Development Alliance, which can compress images in a small storage space, and duplicate or unimportant data in images will be lost.

2. Different uses. PDF is a file format developed by AdobeSystems, which is used for file exchange independent of applications, operating systems and hardware. JPG is a lossy image compression format, which can compress the image into a smaller storage space to achieve faster transmission, decoding and display, and duplicate or unimportant data in the image will be lost.

3. The freedom of operation is different, and the PDF file has high freedom of operation, so it can be edited and modified by special editing software. After the jpg file is generated, the image will be compressed and synthesized, and editing some original contents is no longer supported.