How do i change font size in WKWebView swift 5?

Question

I use UIWebview and this code, it works fine before iOS 13. Since UIWebview is deprecated it did not work in iOS 13. how do I do it using WKWebView?

func changedFont(size: Int){
    let jsString = "document.getElementsByTagName('body')[0].style.fontSize='\(size)px'"
    webView.stringByEvaluatingJavaScript(from: jsString)
}

You may try the answer at link https://stackoverflow.com/a/46000849/2641380 — SHS, Dec 18 '20 at 05:54

score 1 · Answer 1 · answered Dec 02 '19 at 12:52

1

Try this

self.webView.loadHTMLString("<html><body><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0,Proxima Nova-Regular\">\(content)</body></html>", baseURL: nil)

answered Dec 02 '19 at 12:52

Himanshu Patel

1,015
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i use this code, no text is shown only images are showing – Solayman Rana Dec 02 '19 at 14:22
`webView.loadHTMLString((post?.content!.rendered)!, baseURL: nil)` – Solayman Rana Dec 02 '19 at 14:23
`webView.scrollView.isScrollEnabled = false` – Solayman Rana Dec 02 '19 at 14:24

score 0 · Answer 2 · answered Dec 04 '19 at 11:43

Try This. The below code will work when you are having multiple font sizes and you have set same font size for all.

func replaceFontSizes(withSize fontSize: Float, in replaceString: String?) -> String? {
var replaceString = replaceString
var r1 = (replaceString as NSString?)?.range(of: "font-size:")
while r1?.location != NSNotFound {

    let strSub = (replaceString as NSString?)?.substring(from: r1?.location ?? 0)
    var arrStr: [AnyHashable]?

    if strSub?.contains("pt") ?? false {
        arrStr = strSub?.components(separatedBy: "pt")
    } else if strSub?.contains("px") ?? false {
        arrStr = strSub?.components(separatedBy: "px")
    }

    let strReplace = arrStr?[0] as? String

    replaceString = replaceString?.replacingOccurrences(of: strReplace ?? "", with: String(format: "font@@-@@size:%.2f", fontSize))

    r1 = (replaceString as NSString?)?.range(of: "font-size:")
}

replaceString = replaceString?.replacingOccurrences(of: "font@@-@@size:", with: "font-size:")
return replaceString

}

How do i change font size in WKWebView swift 5?

2 Answers2