You need a Nitu account to download the original picture (you can only get points if you upload all kinds of standard materials or publish original works).
However, Nitu.com's requirements are higher and the audit is stricter. Just like you are new to image processing, you have limited image knowledge and can't upload images that meet their requirements.
CDR PS is different software.
Different software has different formats, and vice versa. Different file formats are opened by different software.
TXT is a text format, JPG is an image format, avi is a video format, and so on. ....
You can't open the video with word software.
Images are generally divided into two types: bitmap and vector.
The common format of bitmap is BMP JPEG(jpg) GIF PSD PNG. ...
Common vector formats are ai fh swf cdr eps ... and so on.
PSD belongs to bitmap format and is a special format of PS. Some other software can't be opened, and some can be opened but can't be edited.
Commonly used formats in bitmap include JPG gif PNG PSD and so on.
But PSD format is different from other formats.
If you want to map, such as posting to forum blog QQ ... and other places, these spaces do not support PSD format.
The advantage of saving as PSD file is that this format can store all layers, channels, guides, annotations and color patterns in Photoshop. It is convenient for you to open, modify and edit next time, but PSD format contains more image data information (such as layers, channels, clipping paths, reference lines, etc.). ), so it is much larger than other image files.
In other words, this PSD format is equivalent to a "first draft" format, which can be edited and modified repeatedly.