[null,null,["上次更新時間:2024-09-04 (世界標準時間)。"],[[["This PageSpeed Insights rule flags pages with multiple redirects, as they negatively impact performance by adding extra HTTP request-response cycles and delaying page rendering."],["Redirects can significantly slow down a website, especially on mobile devices, by introducing additional roundtrips for DNS lookups, TCP handshakes, and TLS negotiations."],["Responsive web design is recommended to avoid redirects and provide a seamless multi-device experience."],["If redirects are necessary, follow guidelines for proper implementation and user-agent detection."],["This documentation refers to a deprecated version of the PageSpeed Insights API; the latest version (v5) offers real-world and lab data for more comprehensive insights."]]],["The content explains that multiple redirects slow down page rendering due to added HTTP request-response cycles and potential DNS lookups, TCP handshakes, and TLS negotiations. It recommends minimizing redirects and using responsive design to avoid them. When redirects are required, users should consult guidelines on redirects and user-agent detection. The document also notes that PageSpeed Insights version 4 is deprecated, and version 5 should be used instead. Lastly, it guides users to Stack Overflow and a mailing list for feedback.\n"]]