Photoshop常用的文件格式有很多种，其中 .psd格式是Pho...

Photoshop常用的文件格式有很多种，其中 .psd格式是Photoshop默认的格式，保持图层、通道、路径信息。 .jpg格式是一种常用的有损压缩图像格式，支持RGB、CMYK和灰度模式，但不支持Alpha通道。 .png格式是Netscape公司开发的网络图像文件格式，是一种无损压缩图像文件，利用Alpha通道可以制作透明背景。 试制作一幅广告画，并保存为.psd, .jpg, .png格式，再与保存为.bmp格式的文件大小比较。 There are many file formats commonly used in Photoshop, among them___ . PSD format is the default format of Photoshop, keeping the layer, channel and path information; .jpg is a commonly used lossy compressed image format that supports RGB, CMYK, and grayscale modes, but does not support Alpha channels; . PNG is a network image file format developed by Netscape. It is a lossless compressed image file; Try to make a poster and save it as.psd,.jpg,.png, and then compare it with the file size saved as .bmp.