How to Handle WKWebView Errors in Swift

WKWebView is a powerful component for displaying web content in your Swift iOS applications. However, as with any network-based functionality, errors can occur. To ensure a smooth user experience, it’s essential to handle errors that may arise during web content loading and navigation. In this article, we’ll explore how to effectively handle WKWebView errors in Swift.

Error Types in WKWebView

WKWebView can encounter various types of errors, including:

  1. Network Errors: These occur when there is a problem with the network connection, such as when the device is offline or the web server is unreachable.
  2. Navigation Errors: These errors happen when WKWebView encounters issues while navigating to a new web page or resource. For example, this may occur when a requested URL doesn’t exist.
  3. Content Errors: These errors are related to the content displayed in the web view. For instance, JavaScript errors or problems with rendering web content can trigger content errors.

Handling WKWebView Errors

1. Implement the WKNavigationDelegate

The WKNavigationDelegate protocol provides methods to handle navigation and error-related events. To implement error handling, conform to this protocol and implement the webView(_:didFailProvisionalNavigation:withError:) method. This method is called when a navigation request encounters an error.

class WebViewController: UIViewController, WKNavigationDelegate {
    let webView = WKWebView()

    override func viewDidLoad() {
        webView.navigationDelegate = self

    func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
        // Handle the error
        print("Navigation error: \(error.localizedDescription)")

2. Network Reachability

To handle network-related errors, it’s essential to check the network reachability before loading web content. You can use libraries like Alamofire or Apple’s Network framework to monitor network reachability and display appropriate messages to the user when there’s no network connection.

3. Display User-Friendly Messages

When an error occurs, it’s a good practice to display user-friendly error messages. You can create custom views or alerts to inform users about the error and suggest actions, such as checking their network connection or trying the operation again.

4. Retry Mechanism

In some cases, you may want to provide users with the option to retry an operation that failed due to an error. Implementing a retry mechanism can enhance the user experience.

5. Logging and Analytics

Consider implementing error logging and analytics to track errors users encounter. This data can help you identify recurring issues and improve the stability of your app.


Handling WKWebView errors is essential for delivering a seamless and user-friendly browsing experience in your Swift iOS apps. By implementing the WKNavigationDelegate, checking network reachability, displaying user-friendly messages, providing a retry mechanism, and using logging and analytics, you can ensure that your app gracefully handles errors and provides a reliable web content display.

Incorporating effective error handling not only improves the user experience but also helps you diagnose and resolve issues to create a more robust app.

A pat on the back !!