Create a temporary WordPress installation to handle media files:
Creating a Temporary WordPress Installation
Export content from the main site
Import it to the temporary site and enable "Download Media Attachments".
The resulting upload folder will contain only the actual media used
Simply copy the clean upload folder back to the main site![表情[ciya]-光子波动网 | 专业WordPress修复服务，全球范围，快速响应](https://www.361sale.com/wp-content/themes/zibll/img/thumbnail.svg)
![表情[ciya]-光子波动网 | 专业WordPress修复服务，全球范围，快速响应](https://www.361sale.com/wp-content/themes/zibll/img/smilies/ciya.gif)
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