There's no need for a paid Adobe Acrobat subscription. These built-in and free tools let you merge PDF files quickly.

Use Windows’ built-in Print feature to combine multiple images into a PDF. Merge images to a PDF using a free online service. Combine multiple images to a PDF using desktop freeware.

The Preview app in macOS lets you view, search, print, and perform other actions on PDF files. But if you just need a new PDF with specific pages, you don’t have to monkey around much at all. In ...