Back/forward cache blocking reasons

The notRestoredReasons property of a PerformanceNavigationTiming object explains why the current document was blocked from using the back/forward cache (also known as the bfcache) on navigation.

Learning resources on MDN

• NotRestoredReasonDetails
• NotRestoredReasonDetails: reason property
• NotRestoredReasons
• NotRestoredReasons: children property
• NotRestoredReasons: id property
• NotRestoredReasons: name property
• NotRestoredReasons: reasons property
• NotRestoredReasons: src property
• NotRestoredReasons: url property
• Monitoring bfcache blocking reasons

Browser support

• Chrome 125 Released on 2024-05-14
• Chrome Android 125 Released on 2024-05-14
• Edge 125 Released on 2024-05-17
• Firefox ❌
• Firefox for Android ❌
• Safari ❌
• Safari on iOS ❌

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