Home Google Campaign Manager Certification When the primary HTML5 assets get delayed, what will serve in a user’s browser as it’s loading? When the primary HTML5 assets get delayed, what will serve in a user’s browser as it’s loading? personCertification Answers share Q. When the primary HTML5 assets get delayed, what will serve in a user’s browser as it’s loading? Default ad Polite load image Backup image .swf file Facebook Twitter Whatsapp Newer Older