However, JPEGs can also be used on websites as thumbnails, and preview images. On the other hand, JPEGs are perfect for storing natural, realistic, and detailed photographs. In other words, PNGs are best used as website images, graphics, logos, and line art due to transparency. They both support storing metadata but in different formats.They have a very different compression ratio.JPEG contains less data and is smaller in size.PNG supports a Lossless DEFLATE compression algorithm, while JPEG supports DCT-based lossy compression.PNG supports transparency, while JPEG doesn’t (although JPEG2000 does).For example, certain platforms allow you to upload only JPEG files. However, each image format has an advantage over the other, and in certain situations, you’ll have to use PNG over JPEG, or vice versa. Both are also raster formats, which means they are two-dimensional pictures represented as rectangular matrices of pixels. Both use 16 million or more color data to produce high-quality pictures. Regarding image quality, there’s no real noticeable difference between PNG and JPEG.