Editing PNG (section)

=== Compared to GIF ===
Compared to [[GIF]] files, a PNG file with the same information (256 colors, no ancillary chunks/metadata), compressed by an effective compressor is normally smaller than a GIF image. Depending on the file and the compressor, PNG may range from somewhat smaller (10%) to significantly smaller (50%) to somewhat larger (5%), but is rarely significantly larger<ref name="pngcf" /> for large images. This is attributed to the performance of PNG's [[DEFLATE]] compared to GIF's [[LZW]], and because the added precompression layer of PNG's predictive filters take account of the 2-dimensional image structure to further compress files; as filtered data encodes differences between pixels, they will tend to cluster closer to 0, rather than being spread across all possible values, and thus be more easily compressed by DEFLATE. However, some versions of [[Adobe Photoshop]], [[CorelDRAW]] and [[Microsoft Paint|MS Paint]] provide poor PNG compression, creating the impression that GIF is more efficient.<ref name="pngcf" />