课后将ppt导出为pdf分享到微信中后发现文件大小超出微信限制了。感到很奇怪，因为ppt本身也只有30MB左右，但pdf有400多MB，导致微信不能分享。这个大小让我很诧异。
开始以为是ppt中插入的图片太大，使用了缩减图片大小功能，并删除了已切除部分图片的内容，重新导出后发现pdf依然很大。
搜索后发现这是mac版powerpoint的一个问题，详见：知乎
简而言之，在mac下的解决方案是：
偏好->常规->打印质量：低。（知乎上选择的是中选项，我发现用低选项，导出的pdf质量仍然可接受。）
mac下ppt导出为pdf后文件变大
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《 “mac下ppt导出为pdf后文件变大” 》 有 13 条评论
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