Alpha channel is an additional image channel that specifies transparency (or opacity) of each pixel in the image. 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. |
EXIF-JPEG |
Supports single Alpha channel for Read/write. |
EXIF-TIFF |
Supports single Alpha channel for read only. Supports additional Alpha channels as ImageGear Extra channels for read only.The following compressions are supported with alpha channel:
- Uncompressed
- Packed Bits
- LZW
- Deflate
|
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. |
MAC PICT |
Supports single alpha channel for read only. Alpha channel have to be 8-bit image. |
PNG |
Supports single Alpha channel for read/write. |
RAW |
Supports single Alpha channel in uncompressed images for read only. |
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
|