iOS UICWebViewとWKWebViewはHTML画像のサイズを変更します.

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
[webView stringByEvaluatingJavaScriptFromString:
@"var script = document.createElement('script');"
"script.type = 'text/javascript';"
"script.text = \"function ResizeImages() { "
"var myimg,oldwidth;"
"var maxwidth = 1000.0;" // UIWebView        
"for(i= 0;i 

- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
    [ webView evaluateJavaScript:@"var script = document.createElement('script');"
     "script.type = 'text/javascript';"
     "script.text = \"function ResizeImages() { "
     "var myimg,oldwidth;"
     "var maxwidth = 1000.0;" // WKWebView        
     "for(i=0;i