Learn how to add a Password to zip files. Using free 7-Zip, you can encrypt & easily add a Password to zipped, archived & compressed files.

Learn how Compress Files, Folder, Drive behaves in Windows 11/10. Windows File Compression feature lets you compress files, folders & drives to free up disk space.

If you also want to compress the files with the above extension, uncheck the "Skip Files that are Poorly Compressed" checkbox and restart CompactGUI.

How file compression works The squashing algorithms that file-compressing tools use are sophisticated and powerful, but the principle behind them is easy to grasp.

You can attach a folder to an email in Microsoft Outlook to send several files all at once by compressing the folder into a zip file.