It is the right tool when you need to send someone just one part of a long document: the three signed pages of a forty-page contract, the chapter that matters, the page with the bank details for your accountant.
You can enter single pages separated by commas, ranges with a hyphen, or both together: 1-3, 7, 12 keeps the first three pages plus the seventh and the twelfth. The order you type doesn't matter; the pages stay in their original sequence.
The resulting document keeps the quality and selectable text of the original, because the pages are copied, not redrawn.