iOS: Strip <img...> from NSString (a html string) - html

Question

So I have an NSString which is basically an html string with all the usual html elements. The specific thing I would like to do is to just strip it from all the img tags.
The img tags may or may not have max-width, style or other attributes so I do not know their length up front. They always end with />
How could I do this?
EDIT: Based on nicolasthenoz's answer, I came up with a solution that requires less code:
NSString *HTMLTagss = #"<img[^>]*>"; //regex to remove img tag
NSString *stringWithoutImage = [htmlString stringByReplacingOccurrencesOfRegex:HTMLTagss withString:#""];

Answer 1

You can use the NSString method stringByReplacingOccurrencesOfString with the NSRegularExpressionSearch option:
NSString *result = [html stringByReplacingOccurrencesOfString:#"<img[^>]*>" withString:#"" options:NSCaseInsensitiveSearch | NSRegularExpressionSearch range:NSMakeRange(0, [html length])];
Or you can also use the replaceMatchesInString method of NSRegularExpression. Thus, assuming you have your html in a NSMutableString *html, you can:
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:#"<img[^>]*>"
options:NSRegularExpressionCaseInsensitive
error:nil];
[regex replaceMatchesInString:html
options:0
range:NSMakeRange(0, html.length)
withTemplate:#""];
I'd personally lean towards one of these options over the stringByReplacingOccurrencesOfRegex method of RegexKitLite. There's no need to introduce a third-party library for something as simple as this unless there was some other compelling issue.

Answer 2

Use a regular expression, find the matchs in your string and remove them !
Here is how
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:#"<img[^>]*>"
options:NSRegularExpressionCaseInsensitive
error:nil];
NSMutableString* mutableString = [yourStringToStripFrom mutableCopy];
NSInteger offset = 0; // keeps track of range changes in the string due to replacements.
for (NSTextCheckingResult* result in [regex matchesInString:yourStringToStripFrom
options:0
range:NSMakeRange(0, [yourStringToStripFrom length])]) {
NSRange resultRange = [result range];
resultRange.location += offset;
NSString* match = [regex replacementStringForResult:result
inString:mutableString
offset:offset
template:#"$0"];
// make the replacement
[mutableString replaceCharactersInRange:resultRange withString:#""];
// update the offset based on the replacement
offset += ([match length] - resultRange.length);
}

Answer 3

You can use below function in Swift 4,5:
func filterImgTag(text: String) -> String{
return text.replacingOccurrences(of: "<img[^>]*>", with: "", options: String.CompareOptions.regularExpression)
}
Hope it can help you all! comment below if it work for you. Thanks.