http://www.icab.de/blog/2009/08/18/url-filtering-with-uiwebview-on-the-iphone/
-(nscachedurlresponse*) Cachedresponseforrequest: (nsurlrequest*) request{Nsurl*url =[Request URL]; BOOL Blockurl= [Url.absolutestring Hassuffix:@"jpg"] || [Url.absolutestring Hassuffix:@"JPEG"] || [Url.absolutestring Hassuffix:@"PNG"] || [Url.absolutestring Hassuffix:@"gif"] || [Url.absolutestring Hassuffix:@"ico"] || [Url.absolutestring Hassuffix:@"JPG"] || [Url.absolutestring Hassuffix:@"JPEG"]; if(blockurl) {Nsurlresponse*response =[[Nsurlresponse alloc] Initwithurl:url MIMEType:@"Text/plain"expectedcontentlength:1Textencodingname:nil]; Nscachedurlresponse*cachedresponse =[[Nscachedurlresponse alloc] Initwithresponse:response data:[nsdata datawithbytes:
" "Length1]]; [Super Storecachedresponse:cachedresponse Forrequest:request]; [Cachedresponse release]; [Response release];} return[Super Cachedresponseforrequest:request];}
iOS development UIWebView block suppress image downloads when loading web pages