WinRAR easily opens all most popular formats, including PDF files, and zips them into tiny RAR or ZIP archives. The software can set password protection, divide archive in several volumes or add files to already existing archives with the help of drag-n-drop function. WinRar integrates into the context menu and makes it easy to archive a file at any moment. It’s pretty much impossible to use a computer for a long time and never meet this program. The software lets you open and create your own archived files. WinRAR is one of the most well-known file compression software among Windows PC users. SEE ALSO: How to Reduce Video File Size 1. So don’t skip this post to find a right PDF resizer for you. There are many free and paid PDF optimizers that promise to shrink portable document format files up to 50%. They help you to reduce PDF file size without sufficient quality loss and send files via email or chat apps, upload to file sharing sites or simply store on your hard drive. PDF compression software makes it easy to manage huge PDF documents which contain tons of images, forms, scan pages, graphics, tables, texts, and so on. 5 Easy Ways to Reduce, Compress & Zip PDF Files Free