"from" or "of" for "the extraction .... page"

Question

I wrote:

There are many approaches to perform the main content extraction of web pages.

could it be from web pages? because extraction usually gets from preposition, but I usually hear ...tion of something...

Answer 1

If the webpage is performing the extraction, then 'of' is appropriate. If the content is being extracted from the webpage, 'from' is more appropriate.