{"id":882,"date":"2024-05-07T11:44:59","date_gmt":"2024-05-07T11:44:59","guid":{"rendered":"https:\/\/kb.shortpixel.com\/docs\/why-am-i-getting-a-warning-about-a-conflict-with-a-thumbnail-regenerate-plugin\/"},"modified":"2025-08-27T08:41:21","modified_gmt":"2025-08-27T08:41:21","password":"","slug":"why-am-i-getting-a-warning-about-a-conflict-with-a-thumbnail-regenerate-plugin","status":"publish","type":"docs","link":"https:\/\/kb.shortpixel.com\/knowledge-base\/article\/why-am-i-getting-a-warning-about-a-conflict-with-a-thumbnail-regenerate-plugin\/","title":{"rendered":"Why am I getting a warning about a conflict with a thumbnail regeneration plugin?"},"content":{"rendered":"\n<p>ShortPixel Image Optimizer optimizes images, and almost all the plugins that are used to regenerate thumbnails (or have this option available) can make ShortPixel &#8220;forget&#8221; it has optimized your images and trigger a re-compression. This action causes your images to be <strong>overoptimized<\/strong>. Here&#8217;s more information about this particular problem: <a href=\"https:\/\/shortpixel.com\/knowledge-base\/article\/why-are-my-images-re-compressed\/\" rel=\"noopener\">Why are my images re-compressed?<\/a><\/p>\n\n\n\n<p>Some plugins that can cause the over-optimization are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/wordpress.org\/plugins\/simple-image-sizes\/\" target=\"_blank\" rel=\"noopener\">Simple Image Sizes<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/wordpress.org\/plugins\/woocommerce\/\" target=\"_blank\" rel=\"noopener\">WooCommerce<\/a> &#8211; has a thumbnail regeneration component<\/li>\n\n\n\n<li><a href=\"https:\/\/wordpress.org\/plugins\/regenerate-thumbnails\/\" target=\"_blank\" rel=\"noopener\">Regenerate Thumbnails<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/wordpress.org\/plugins\/regenerate-thumbnails-and-delete-unused\/\" target=\"_blank\" rel=\"noopener\">Regenerate thumbnails and delete unused<\/a><\/li>\n<\/ul>\n\n\n\n<p>The list is <strong>not <\/strong>limited to those listed. As mentioned, <strong>almost all thumbnail regeneration plugins can conflict<\/strong>.\u00a0<\/p>\n\n\n\n<p>There are two possible solutions for this:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Use <a href=\"https:\/\/wordpress.org\/plugins\/regenerate-thumbnails-advanced\/\" target=\"_blank\" rel=\"noopener\">reGenerate Thumbnails Advanced<\/a> which is compatible with <a href=\"https:\/\/wordpress.org\/plugins\/shortpixel-image-optimiser\/\" rel=\"noopener\">ShortPixel Image Optimizer<\/a>.<\/li>\n\n\n\n<li>You can deactivate ShortPixel Image Optimizer while you perform the thumbnail regeneration, and once you finish, re-activate it. This will not prevent losing ShortPixel&#8217;s metadata (which means that ShortPixel won&#8217;t remember whether an image was optimized), but at least it should not automatically re-compress the images and lead to over-optimization.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>ShortPixel Image Optimizer optimizes images, and almost all the plugins that are used to regenerate thumbnails (or have this option available) can make ShortPixel &#8220;forget&#8221; it has optimized your images and trigger a re-compression. This action causes your images to be overoptimized. Here&#8217;s more information about this particular problem: Why are my images re-compressed? Some [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[37],"glossaries":[],"doc_tag":[],"class_list":["post-882","docs","type-docs","status-publish","hentry","doc_category-shortpixel-image-optimizer"],"blocksy_meta":[],"year_month":"2026-05","word_count":164,"total_views":"697","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"admin","author_nicename":"admin_mdli53m5","author_url":"https:\/\/kb.shortpixel.com\/author\/admin_mdli53m5\/"},"doc_category_info":[{"term_name":"ShortPixel Image Optimizer","term_url":"https:\/\/kb.shortpixel.com\/knowledge-base\/category\/shortpixel-image-optimizer\/"}],"doc_tag_info":[],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/comments?post=882"}],"version-history":[{"count":1,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/882\/revisions"}],"predecessor-version":[{"id":1464,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/882\/revisions\/1464"}],"wp:attachment":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/media?parent=882"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_category?post=882"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/glossaries?post=882"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_tag?post=882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}