\n\t When using ShortPixel Adaptive Images, you might end up in certain cases with a CORS warning that looks like this:<\/p>\n
\n Warning: access to image
\n\tand-the-image-url-goes-here<\/code> has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.\n<\/p><\/blockquote>\n\n\t This can happen when ShortPixel processes resources – images, CSS, JS or fonts – for the first time (check
\n\tthis article<\/a> to learn more about how ShortPixel AI works). Every time a resource is visited for the first time, we’ll return a temporary 307 redirect<\/a> for them (until they are processed by our systems) and this can throw a CORS warning like the one described above. <\/p>\n\n\t There are 2 solutions to this, one which is more permissive (and might fix other CORS issues present on your site) and another more restrictive one, which will address this specific issue. <\/p>\n
\nFor both solutions, please consult with your hosting provider on how to implement them<\/strong>.
\n<\/section>\n\n\t The more permissive solution is to add an
\n\tAccess-Control-Allow-Origin<\/code> header on your site in the following way. This will basically allow requests made from any origin:<\/p>\nAccess-Control-Allow-Origin: *\n<\/pre>\n\n\t The more restrictive solution is to add the same
\n\tAccess-Control-Allow-Origin<\/code> header, but with your site domain, for example:<\/p>\nAccess-Control-Allow-Origin: https:\/\/yourdomain.com\n<\/pre>\n","protected":false},"excerpt":{"rendered":"When using ShortPixel Adaptive Images, you might end up in certain cases with a CORS warning that looks like this: Warning: access to image and-the-image-url-goes-here has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. This can happen when ShortPixel processes resources – images, CSS, JS or fonts – for the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[35],"glossaries":[],"doc_tag":[],"class_list":["post-864","docs","type-docs","status-publish","hentry","doc_category-shortpixel-adaptive-images"],"blocksy_meta":[],"year_month":"2026-05","word_count":204,"total_views":"1110","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 Adaptive Images","term_url":"https:\/\/kb.shortpixel.com\/knowledge-base\/category\/shortpixel-adaptive-images\/"}],"doc_tag_info":[],"knowledge_base_info":[],"knowledge_base_slug":[],"_links":{"self":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/864","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=864"}],"version-history":[{"count":1,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/864\/revisions"}],"predecessor-version":[{"id":2394,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/864\/revisions\/2394"}],"wp:attachment":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/media?parent=864"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_category?post=864"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/glossaries?post=864"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_tag?post=864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}