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ImageGear provides alpha channel support for the following file format filters:

Format	Support
Adobe PSB	Supports single Alpha channel for Read only. Supports additional Alpha channels as ImageGear Extra channels for Read only.
Adobe PSD	Supports single Alpha channel for Read only. Supports additional Alpha channels as ImageGear Extra channels for Read only.
CUR	Supports single 8-bit alpha channel for read/write. Supports single 1-bit alpha channel for read only.
ICO	Supports single 8-bit alpha channel for read/write. Supports single 1-bit alpha channel for read only.
JPEG	Supports single Alpha channel for Read/write.
JPEG 2000	Supports single Alpha channel for read/write, for Grayscale and RGB images.
JPX	Supports single Alpha channel for read/write, for Grayscale and RGB images. Supports additional Alpha channels as ImageGear Extra channels for read/write.
PNG	Supports single Alpha channel for read/write.
SGI	Supports single alpha channel for read and write.
TGA	Supports single alpha channel for read and write.
TIFF	Supports single Alpha channel for read and write. Supports additional Alpha channels as ImageGear Extra channels for read and write. The following compressions are supported with alpha channel: Uncompressed Packed Bits LZW Deflate

 

 

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