WWDC21 · 17 min · App Services / Safari & Web

Explore Safari Web Extension improvements

Learn how you can extend Safari’s functionality with Safari Web Extensions. We’ll introduce you to the latest WebExtension APIs, explore non-persistent background page support — a particularly relevant topic if you’re developing for iOS — and discover how you can use the Declarative Net Request WebExtensions API to block content on the web. Finally, we’ll show you how to customize tabs in Safari 15.

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