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Turn a website into an app in Safari on Mac
You can open and use a website as if it’s an app.
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In the Safari app
on your Mac, go to a website.
Click the Share button
in the toolbar, then choose Add to Dock.
Click Add.
An icon for the web app is added to the Dock and Launchpad. If you were signed in to the website, you’re automatically signed in to the web app in most cases. Your username and password remain the same.
The web app has a simplified toolbar and you can receive notifications from the web app just like you would from any app.