PNG is an abbreviation for (Portable Network Graphics). It is a graphic file format supporting lossless compression of data.. The PNG format is a non-patented replacement for the GIF (Graphics Interchange Format). The format supports over 256 colors but it doesn’t support animations, except with the use of curremtly unpopular extensions. It also allows for RGBA 4 color channel and supports gamma storing.
PNG stores gamma information so that images can be viewed as intended across different platforms. Otherwise images on a Mac will look different on windows due to a different gamma setting for the respective monitors.
PNG is the best format for saving graphics and text.It does not do as well if there is much photographic content. Other formats like JPEG become fuzzy when they are repeatedly saved and edited or downloaded and re-uploaded across the web.
PNG file formats on the other hand manage to remain sharp and crisp throughout. You can also save photographs in PNG but it won’t compress as efficiently as JPEG. If you are thinking of line drawings, business charts,logos, signs and so forth PNG is the best way to go.
While JPEG is the best format to use on the web, it falls short with transparent backgrounds. If you want beautiful images with transparent backgrounds on your website, you can only use the PNG format. Unfortunately, PNG is not always the ideal format for photographs, especially on the web. This is because PNG files are much larger and do not compress as efficiently as JPEG.
As a result, you should really consider using JPEG instead of PNG when saving real-life images, or anything relatively similar. Especially when you don’t require that the image has to remain sharp and clean when it is shared multiple times.
Furthermore, PNG images can be interlaced. This means that when there is a slower connection, PNG images can be shown gradually before they are fully loaded.