Want to reduce PDF file size? Download PDF Reducer free. Or you can compress PDF file online using this free online tool to optimize PDF file size.

You can combine multiple PDF files into a single, easy-to-share document using simple software on your Mac computer or Windows PC. Here's how.

If PDF Thumbnail & Preview are not showing in File Explorer, then use PowerToys or Freeware to preview PDF files & add Thumbnail Previews to PDF.

This Windows desktop PDF editor provides everything you're likely to need for working in PDFs at a fraction of the price of the big brands.

The Microsoft Edge browser is the default app for PDF files on Windows PCs. However, you can easily change your default PDF viewer to Adobe’s Acrobat Reader DC for files saved to your Windows PC.

No matter your operating system, knowing how to combine PDF files is a good skill. We'll teach you the best ways to do so for Windows, macOS, or via the web.