Show only certain dimensions of the web page in UIWebView

How can 开发者_开发知识库I show only part of the page that a UIWebView has loaded?

Not sure there is a solution which is straight-forward. I'd suggest one of the following (assuming I'm reading the question right)...

(1) Get the web server to serve up a custom page which only contains what you need

or...

(2) Grab the data from the web, modify it to only include what you need and then display it using UIWebView.

What exactly is it you're trying to achieve?