The font looks like smaller in WKWebView than in UIWebView

Question

I changed UIWebView to WKWebView,however,with the same html,the font in WKWebView looks like smaller than in UIWebView.I don't want this happen,so is there any way to avoid this change?

Answer 1

Finally I solved this problem by adding an html string:

• For Objective-C:

NSString *headerString = @"<header><meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no'></header>";
[self.webView loadHTMLString:[headerString stringByAppendingString:yourHTMLString] baseURL:nil];

• For Swift:

let headerString = "<header><meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no'></header>"
webView.loadHTMLString(headerString + yourHTMLString, baseURL: nil)

---

What's more,if you want to load url rather than html you can try:

private var isInjected: Bool = false
webView.navigationDelegate = self
// MARK: - WKNavigationDelegate
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
    if isInjected == true {
        return
    }
    self.isInjected = true
    // get HTML text
    let js = "document.body.outerHTML"
    webView.evaluateJavaScript(js) { (html, error) in
        let headerString = "<header><meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no'></header>"
        webView.loadHTMLString(headerString + (html as! String), baseURL: nil)
    }

}