A zipped folder compresses your files into one smaller package that's easier to share

A zipped folder (also called a ZIP file or archive) takes multiple files or an entire folder and squeezes them into a single compressed file that takes up less storage space and is easier to email or share. On Windows, you right-click the folder you want to compress and select "Send to" then "Compressed (zipped) folder." On Mac, you right-click the folder and select "Compress." Both operating systems create the zipped version in the same location as the original, and the original folder stays where it is — zipping does not move or delete anything.

The process is instant on both systems and requires no special software or settings. Once the ZIP file appears, you can move it, email it, or upload it anywhere you need it. The original folder remains exactly where it was, so you have both versions until you decide to delete one.

Key Takeaways

  • Windows users right-click a folder, choose "Send to," then click "Compressed (zipped) folder" to create a ZIP file instantly.
  • Mac users right-click a folder and select "Compress" to create a ZIP file in the same location.
  • The original folder remains untouched after zipping — the compressed version is a separate file.
  • Zipped folders work on both Windows and Mac computers, and most email services let you attach them without size restrictions.
  • You can zip a single file, multiple files, or an entire folder with subfolders inside.

How to zip a folder on Windows

Open File Explorer and locate the folder you want to compress. Right-click directly on the folder name (not inside it). A menu will appear with several options. Look for "Send to" and hover your mouse over it — a submenu will pop out to the side. Click "Compressed (zipped) folder." Windows will create a new ZIP file in the same location with the same name as your original folder, plus a .zip extension. The process takes a few seconds to a few minutes depending on the folder size.

If you do not see "Send to" in your right-click menu, your version of Windows may be different. Try right-clicking the folder again and looking for "Compress" or "Archive" instead. Some older Windows versions use different menu labels. Once the ZIP file appears, you can move it, email it, or upload it anywhere you need it. The original folder stays exactly where it was.

How to zip a folder on Mac

Open Finder and navigate to the folder you want to compress. Right-click the folder and select "Compress" from the menu that appears. Mac will create a ZIP file with the same name as your folder, plus a .zip extension, in the same location. The compression happens in the background — you may see a progress indicator briefly, or it may finish so fast you do not notice it at all.

If you want to compress multiple folders at once on Mac, hold down the Command key and click each folder you want to include, then right-click and select "Compress." Mac will create a single ZIP file containing all of them. The original folders remain on your computer untouched.

Zipping multiple files instead of a folder

You do not have to zip an entire folder — you can zip individual files or a mix of files and folders together. On Windows, select the files you want to compress by clicking the first one, then holding Ctrl and clicking each additional file. Right-click any of the selected files and choose "Send to" then "Compressed (zipped) folder." Windows will create one ZIP file containing all the files you selected.

On Mac, select multiple files by clicking the first one, then holding Command and clicking each additional file. Right-click and select "Compress." Mac creates a single ZIP file with all your selections inside. This method works whether the files are in the same folder or scattered across different locations on your computer.

What happens to the original folder after zipping

The original folder and all its contents stay exactly where they are. Zipping creates a copy of your files in compressed form — it does not move or delete the originals. You now have two versions: the original folder taking up its normal amount of space, and the new ZIP file taking up less space. If you want to free up storage, you can delete the original folder after confirming the ZIP file was created successfully and contains everything you need.

To check what is inside a ZIP file before deleting the original, double-click the ZIP file on either Windows or Mac. Your computer will show you a preview of the contents without permanently extracting anything. This is a safe way to verify the zipped version is complete before you remove the original.

Sending a zipped folder by email

Once you have created a ZIP file, you can attach it to an email just like any other file. Most email services (Gmail, Outlook, Yahoo) accept ZIP attachments without any special steps. The compressed file is usually small enough to send even if the original folder would have been too large. Open your email, click the attachment button (usually a paperclip icon), and select your ZIP file from your computer.

If the ZIP file is still too large for email, you can upload it to cloud storage like Google Drive, OneDrive, or Dropbox and send a link instead. Most recipients can open a ZIP file on their computer without installing anything extra — Windows and Mac both have built-in ZIP support.

Opening a zipped folder someone sent you

When you receive a ZIP file, double-click it to open it. On Windows, File Explorer will show you the contents. On Mac, the Finder will display the files inside. Your computer automatically extracts (unzips) the files into a new folder in the same location as the ZIP file. The original ZIP file remains on your computer — extracting does not delete it. You can delete the ZIP file once you have confirmed the extracted files are there and working.

If double-clicking does not work, right-click the ZIP file and look for "Extract all" on Windows or "Open" on Mac. Some older or unusual file types may need special software to open, but standard ZIP files work on any computer without extra programs.

Frequently Asked Questions

Can I zip a folder that contains subfolders?

Yes. When you zip a folder, everything inside it — including subfolders and all their contents — gets compressed into the ZIP file. The folder structure stays the same, so when someone extracts the ZIP, they get the exact same layout of folders and files you had originally.

Does zipping a folder make it smaller?

Usually, yes, but the amount varies. Text files, documents, and images often compress to 50 to 80 percent of their original size. Video and audio files that are already compressed do not shrink much. You can see the size difference by comparing the original folder size to the ZIP file size in your file explorer.

What if I need to password-protect a zipped folder?

Windows and Mac do not have built-in password options for ZIP files. You would need third-party software like 7-Zip (Windows) or Keka (Mac) to add password protection. Alternatively, you can upload the ZIP file to cloud storage and set a password on the share link instead.

Can I edit files inside a ZIP file without extracting it?

No. You must extract the ZIP file first, edit the files, and then re-zip them if you want to send the updated version. Editing files while they are still inside the ZIP can cause the changes to be lost.

Is there a size limit for how large a ZIP file can be?

Standard ZIP files can hold up to 4 gigabytes. For most everyday use — documents, photos, spreadsheets — you will never hit this limit. If you are zipping video files or large databases, check the total size before zipping to make sure you stay under the limit.