Force Wkwebview to Show Mobile Version

WKWEBVIEW to display only mobile version of website

Do you already tried to clear all caches and set user agent?

Something like this:

let dataTypes = NSSet(array: [
    WKWebsiteDataTypeDiskCache,
    WKWebsiteDataTypeOfflineWebApplicationCache,
    WKWebsiteDataTypeMemoryCache,
    WKWebsiteDataTypeLocalStorage,
    WKWebsiteDataTypeCookies,
    WKWebsiteDataTypeSessionStorage,
    WKWebsiteDataTypeIndexedDBDatabases,
    WKWebsiteDataTypeWebSQLDatabases])
let date = NSDate(timeIntervalSince1970: 0)
WKWebsiteDataStore.defaultDataStore().removeDataOfTypes(websiteDataTypes as! Set<String>, modifiedSince: date, completionHandler:{ })

and after this cleaning, set a user agent

webview.customUserAgent = "Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_3 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"

Maybe you should try this one, but maybe isn't the best solution

Force UIWebView to load mobile version of website, like Safari does

I forgot to set the constraints for the UIWebView, which caused the content to be rendered wrongly. I don't know how that's relevant, but constraining the UIWebView seems to not only render the content correctly but also display the mobile site.

Load desktop version WKWebView iOS 9

To help any who find themselves here for an answer.
The solution was

UserDefaults.standard.register(defaults: ["UserAgent" : "Chrome Safari"])

Request desktop site WKWebview not working in Swift 4

Here's my tested code:

class ViewController: UIViewController {

    var webview: WKWebView?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        createWebView()
        if let url = URL(string: "https://quora.com") {
            load(url: url)
        }
    }

    private func createWebView() {
        let config = WKWebViewConfiguration()
        let webview = WKWebView(frame: self.view.frame, configuration: config)
        webview.uiDelegate = self
        webview.navigationDelegate = self
        self.webview = webview
        self.view.addSubview(webview)
    }

    private func load(url: URL) {
        var request = URLRequest(url: url)
        let userAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.109 Safari/537.36"
        request.addValue(userAgent, forHTTPHeaderField: "User-Agent")
        webview?.load(request)
    }
}

extension ViewController: WKNavigationDelegate {
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        print("\(#function)")
    }

    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        print("\(#function): \(error)")
    }
}

extension ViewController: WKUIDelegate {

}

And the resulting page:

Cheers!

Force SFSafariViewController to load the desktop version of a website

As of iOS 9, sadly no. Your best bet might be to create your own web view and use a different user agent as @vizllx suggests in the comments.

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