Class for loading Portable Network Graphics Images.

public TPNGFileFormat = class(TNetworkGraphicsFileFormat);

ImagingNetworkGraphics (at line 104)

Loads all types of this image format (all images in png test suite) and saves all types with bitcount >= 8 (non-interlaced only). Compression level and filtering can be set by options interface. 

Supported ancillary chunks (loading): tRNS, bKGD (for indexed images transparency contains alpha values for palette, RGB/Gray images with transparency are converted to formats with alpha and pixels with transparent color are replaced with background color with alpha = 0).

TObject
TImageFileFormat
TNetworkGraphicsFileFormat
TPNGFileFormat