: A robust tool for Windows, macOS, and Linux that lets you edit and extract parts of a document.

: A lightweight and fast alternative to Adobe, popular for its Microsoft-like interface and efficient comment management.

: A 100% free, feature-rich viewer that works offline and is very simple to use.

: Allows you to split a single document into multiple separate files by page range or size.

If you need to "unpack" specific pages or content from a large PDF: