{"id":760,"date":"2024-05-07T11:42:52","date_gmt":"2024-05-07T11:42:52","guid":{"rendered":"https:\/\/kb.shortpixel.com\/docs\/warning-cross-origin-read-blocking-corb-blocked-cross-origin-response\/"},"modified":"2025-08-27T08:43:43","modified_gmt":"2025-08-27T08:43:43","password":"","slug":"warning-cross-origin-read-blocking-corb-blocked-cross-origin-response","status":"publish","type":"docs","link":"https:\/\/kb.shortpixel.com\/knowledge-base\/article\/warning-cross-origin-read-blocking-corb-blocked-cross-origin-response\/","title":{"rendered":"Warning: Cross-Origin Read Blocking (CORB) blocked cross-origin response"},"content":{"rendered":"

\n\t Sometimes, when using ShortPixel Adaptive Images, you will see a warning showing up on the developer console, like this:<\/p>\n

\n\t<\/p>\n

\n\t The warning will say<\/p>\n

\n\tCross-Origin Read Blocking (CORB) blocked cross-origin response … with MIME type application\/octet-stream.\n<\/p><\/blockquote>\n

\n This issue appears when there is no
\n\taccess-control-allow-origin: *<\/code> specified in the headers of the image or when there is no actual image but just a broken one.\n<\/div>\n
\n

\n\t\t To solve this, flush your website’s cache and then try again. Please do it following these instructions:
\n\t\tHow to clear WordPress cache<\/strong><\/a>\n\t<\/p>\n

\n\t\t If that doesn’t work, then also please try to change the API URL as explained
\n\t\there<\/a>. In short, you basically will need to have  https:\/\/cdn.shortpixel.ai\/spai2<\/code> instead of https:\/\/cdn.shortpixel.ai\/spai<\/code>.\n\t<\/p>\n

\n\t\t If that still doesn’t solve the issue, please
\n\t\tcontact us<\/a> and we’ll do our best to help.\n\t<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Sometimes, when using ShortPixel Adaptive Images, you will see a warning showing up on the developer console, like this: The warning will say Cross-Origin Read Blocking (CORB) blocked cross-origin response … with MIME type application\/octet-stream. This issue appears when there is no access-control-allow-origin: * specified in the headers of the image or when there is no actual […]<\/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-760","docs","type-docs","status-publish","hentry","doc_category-shortpixel-adaptive-images"],"blocksy_meta":[],"year_month":"2026-04","word_count":142,"total_views":"1060","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\/760","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=760"}],"version-history":[{"count":1,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/760\/revisions"}],"predecessor-version":[{"id":2508,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/docs\/760\/revisions\/2508"}],"wp:attachment":[{"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/media?parent=760"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_category?post=760"},{"taxonomy":"glossaries","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/glossaries?post=760"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/kb.shortpixel.com\/wp-json\/wp\/v2\/doc_tag?post=760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}