Images are replaced with blank white space while converting pdf to lower version (1.4 ) using ghostscript. Everything seems fine but some content such as images of pdf was replaced. How to keep all content safe on converted pdf file? Script i used:Images are replaced with blank white space whil
阅读背景：
使用ghostscript将图像转换为较低版本（1.4）时，图像将替换为空白空格
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