Windows allows you to Print files to PDF using Microsoft Print to PDF, which is built into Windows 11/10. No need to use any 3rd-party free software!

The easiest graphical way to merge PDF files on Windows 11 is by using a third-party app. There are many apps to choose from, but I’ll show you how to use one called PDF Merger & Splitter.

Microsoft has fixed a known bug that breaks the 'Print to PDF' feature on Windows 11 24H2 systems after installing the April 2025 preview update.