Recently, one of readers users asked if it was possible to regenerate PDF thumbnails for old uploads in WordPress? In WordPress 4.7, you now have thumbnail previews for all new PDF files. However, this change does not affect older uploads. In this article, we will show you how to regenerate PDF thumbnails in WordPress for older uploads.
您只需将 PDF 文件上传到您的 WordPress 网站即可测试 imagemagick。如果它显示 PDF 文件的缩略图预览，那么您就可以开始了。
您只需将 PDF 文件上传到您的 WordPress 网站即可测试 imagemagick。如果它显示 PDF 文件的缩略图预览，那么就可以开始了。
Please note, that the plugin we are going to use in this article, will regenerate thumbnails for all your older image files as well. As a precaution, 备份您的 WordPress 网站 or at least backup your /wp-content/uploads/ folder.