Proof of concepts for idea of handling deep link redirection inside SFSafariViewController.

1. Run terminal in project root directory.
2. Run cd server.
3. Run python -m SimpleHTTPServer.
4. Open DeepLinkCheburek.xcodeproj.
5. Build & Run app on simulator.

1. Add custom url scheme inside Info -> URL Types section of target's settings.
2. Turn on Allow Arbitrary Loads flag inside info.plist.
3. Implement func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool method inside AppDelegate.

Implement redirection to custom url scheme using, for example, the next script on redirecting web page:

<script>
    var redirectToApp = function() {
        document.location = 'my-deep-link://smth';
    };

    window.onload = redirectToApp;
</script>

Defining a Custom URL Scheme for Your App

SFSafariViewController