well its a little different here from a normal browser , on a browser you get to see the actual website in its entirety, including the ad banners on a website (?) and links to their sponsors blah blah. ( inspite of the ad blocker i suppose ? )
Sorry maybe I wasnt clear when I said I dont modify the html data.

In apps, we would not like to display the entire content as it would display on a normal browser with ad blocker , so we extract the relevant data from the response html and display what we want
( we arent changing data but just the format thats what i had meant by not modifying data )
hope that clarifies