Ability to chose File type to download or Ignore during Batch Download

When we click on a page and select "Download all with Free Download Manager" it only give us Options like "select all" and "select none" which can be tricky for selecting 100's of download or Deselecting those unwanted links. But if it was possible to select the "File extensions" we want to download/ignore from all those links, it would be a life saver. For example like "Internet Download Manager/Xtreme Download Manager"s batch download options.

Thank you in Advance.