The background color chunk specifies the implit background color.

Gets or sets file data.

Gets or sets file offset.

The gamma chunk specifies relationship between the image and the intensity of the hole image.

The histogram chunk contains approximatelly values about frequency of using specific colors in the image. When is not possible to show all colors, an application can deside which color should be replaced with the different one.

The chroma chunk is used in applications, which require the specification of device-independent colors.

The image data chunk.

The image header chunk. It must be located in the beginning of the PNG file. It contains basic informace about an image (size...)

The image trailer chunk. The chunk is empty.

Gets or sets file length.

The palette chunk.

Physical dimension chunk contains information about the size of a pixel in the real image.

SGP chunk contains information about SGP specific properties such as transparency, tile size and many more.

Significant bits chuck.

Text chunk contains user text information.

Last modification time chunk.

Transparency chunk specifies whether the image use transparency.

Gets or sets type of information.

Gets or sets CRC check bits.

ZText chunk contains compressed user data.