从主屏幕图标启动PWA时，将由哪个浏览器打开？

Great question! Let me break down how this works across different platforms, since behavior can vary a bit depending on your OS and the browser you used to add the PWA:

核心原则 #

First off, the general rule is: the browser you used to "Add to Home Screen" is the one that will handle the PWA launch—but it won’t open a regular browser window with address bars and tabs. Instead, it uses a dedicated, stripped-down container for the PWA to run in full-screen, with all its offline and app-like features intact.

分平台细节 #

Android #

• For major browsers like Chrome, Edge, or Firefox: When you tap the home screen icon, the PWA launches in a browser-specific "PWA container"—think of it as a lightweight, UI-less instance of that browser. It’s tied directly to the browser you used to add the app, so it won’t switch to your system default browser or a generic system WebView.
• Custom Android ROMs might have minor variations, but this is the standard behavior across most devices.

iOS/iPadOS #

• Safari: This is the most reliable browser for PWAs on iOS. Adding a PWA to your home screen from Safari launches it in Apple’s dedicated "Web Clip" environment, which uses Safari’s WebKit engine but runs without any Safari browser UI. It’s fully tied to Safari, not system WebView or other browsers.
• Third-party browsers (Chrome, Edge, etc.): Due to iOS’s app restrictions, all third-party browsers use WebKit under the hood. Some will redirect you to Safari’s Web Clip when launching the PWA, while others might run it in their own container—but either way, it’s linked to the browser you used to add the app, not a generic system component.

关于系统WebView #

You don’t have to worry about the PWA launching in a system WebView. System WebView is designed for embedding web content inside native apps, and it doesn’t support full PWA features like Service Workers or the full manifest capabilities needed for app-like behavior. PWAs rely on the browser’s full PWA support stack, so they stick to the browser that originally set them up.

内容的提问来源于stack exchange，提问作者sçuçu