实际上WordPress渲染上传的图像。因此，如果上载动画gif，它将不会保持动画状态。阅读这篇关于如何克服这些问题的文章。

我还没有读完，但正如Howdy\\u McGee所说，你必须使用一个插件。

Essential WordPress Plugins for Working With Animated GIFs

可以使用添加筛选器add_filter() 勾引wp_generate_attachment_metadata 要教会Wordpress正确调整gif动画图像的大小，请执行以下操作：

/**
 * Filters the generated attachment meta data.
 * @param array $metadata An array of attachment meta data.
 * @param int $attachment_id Current attachment ID.
 * @param string $context Additional context. Can be \'create\' when metadata was initially created for new attachment or \'update\' when the metadata was updated.
 * @return array
 * @author: gresser 2020-11-26
 */
public function resizeGifs(array $metadata, int $attachment_id, string $context)
{
    if (preg_match(\'/\\.gif$/\', $metadata[\'file\'])) {

        foreach ($metadata[\'sizes\'] as $image_site) {

            $file_path_original = wp_upload_dir()[\'basedir\'] .\'/\'. $metadata[\'file\'];
            $imagick = new Imagick($file_path_original);
            $imagick = $imagick->coalesceImages();

            $width = $image_site[\'width\'];
            $height = $image_site[\'height\'];

            foreach ($imagick as $frame) {
                $frame->cropThumbnailImage($width, $height);
                $imagick->setImagePage($width, $height, 0, 0);
            }
            $imagick = $imagick->deconstructImages();

            $file_path_thump = wp_upload_dir()[\'path\'] .\'/\'. $image_site[\'file\'];
            $imagick->writeImages($file_path_thump, true);
        }
    }
    return $metadata;
}