how to increase font size in UIWebView

Question

how to increase or decrease the UIWebview font size, not using scalePageToFit:NO;

Answer 1

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    NSString *fontSize=@"143";
    NSString *jsString = [[NSString alloc]      initWithFormat:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '%d%%'",[fontSize intValue]];
    [myWebview stringByEvaluatingJavaScriptFromString:jsString];

}