PNG is a scan-line graphic format developed as an alternative to GIF, a commercial licensed product. However, they are both raster image types. PNG is based on the best features of the predecessor, including lossless compression and transparent background support. The PNG technology ensures the preservation of all stages of editing and the restoration of the step by preserving the quality. However, it does not allow users to save several pictures in one file at once, limiting its use in the development of animated images.