<ul><li>Safari on Mac now supports Declarative Web Push to show notifications even when a website isn’t open.</li><li>Declarative Web Push in Safari is energy-efficient, private, and does not require service workers.</li><li>Safari 15.5 for Mac has adopted Declarative Web Push that leverages a JSON format for notifications.</li><li>Declarative Web Push technology is available on mobile Safari for iOS 18.4 and iPadOS 18.4, and on Mac with Safari 18.5 in macOS 15.5 update.</li></ul>

Safari can now push web notifications even when a website isn’t open

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