# Promoted images (scripts/promote.js) have no file extension, so they'd go out without a Content-Type. Browsers detect # JPEG, PNG, GIF and WebP from the bytes whatever type is declared, so promote.js promotes only those. /direct-img.link/* Content-Type: image/jpeg Cache-Control: public, max-age=604800 Access-Control-Allow-Origin: * /free.direct-img.link/* Content-Type: image/jpeg Cache-Control: public, max-age=604800 Access-Control-Allow-Origin: * /ai.direct-img.link/* Content-Type: image/jpeg Cache-Control: public, max-age=604800 Access-Control-Allow-Origin: *