Disable Magnification Gesture in Wkwebview

Disable zoom in WKWebView?

You will have to add maximum scale in script.

The following code should help you:

let source: String = "var meta = document.createElement('meta');" +
    "meta.name = 'viewport';" +
    "meta.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no';" +
    "var head = document.getElementsByTagName('head')[0];" +
    "head.appendChild(meta);"

let script: WKUserScript = WKUserScript(source: source, injectionTime: .atDocumentEnd, forMainFrameOnly: true)
let userContentController: WKUserContentController = WKUserContentController()
let conf = WKWebViewConfiguration()
conf.userContentController = userContentController
userContentController.addUserScript(script)
let webView = WKWebView(frame: CGRect.zero, configuration: conf)

Disable magnification gesture in WKWebView

You can prevent your users from zooming by setting the delegate of your WKWebKit's UIScrollView and implementing viewForZooming(in:) as in the following:

class MyClass {
    let webView = WKWebView()

    init() {
        super.init()
        webView.scrollView.delegate = self
    }

    deinit() {
        // Without this, it'll crash when your MyClass instance is deinit'd
        webView.scrollView.delegate = nil
    }
}

extension MyClass: UIScrollViewDelegate {
    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        return nil
    }
}

Disable WKWebView zooming

Please try this to disabled zooming for pinch gesture.

func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) {
     scrollView.pinchGestureRecognizer?.isEnabled = false
}

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