Extracting pages creates files of the same size as the original file ?

[calimbrasti94]

Hello and thanks for this great plugin ! much better than some paid ones. i have a doubt about how page extraction works. why if i extract a chapter of a document (often large university books in pdf) the file that is created has the same size (KB) as the original file from which it is extracted ?

Screenshot of the files size of the same book but extracted differently.

This was extracted with PDF++. I had extracted even more chapters in this way, thus also very small in size, than the web-app shown below.

This extracted with a web-app