Sending multiple files via email or uploading entire project directories to cloud storage can be incredibly frustrating. Many email providers block the transmission of specific file types (like scripts or executables), and uploading hundreds of individual photos takes significantly longer than uploading a single file of the exact same size.
The solution is to compress the files into a single ZIP archive. While many Mac users assume they need to download third-party utilities like WinZip or The Unarchiver to achieve this, Apple has built a highly efficient compression tool directly into the macOS operating system.
How to Compress Files into a Zip Archive
The native Archive Utility is deeply integrated into the Finder application, making compression a one-click process.
- Open a Finder window and locate the files or folders you wish to compress.
- Select the items you want to include in the ZIP file.
- To select a single folder or file, just click it once.
- To select multiple continuous items, click the first item, hold the Shift key, and click the last item.
- To select multiple non-continuous items, hold the Command key and click each item individually.
- Once all desired items are highlighted in blue, Right-Click (or hold Control and click) on any one of the highlighted items.
- From the context menu that appears, select Compress “[Number]” Items (or “Compress ‘[File Name]'” if only selecting one item).
A progress bar will briefly appear. Depending on the total size of the files, this process can take anywhere from a fraction of a second to several minutes.
Locating and Naming the New Archive
Once the compression is complete, the original files remain completely untouched in their current location. The new ZIP file is created in the exact same directory.
- If you compressed a single file or folder: The new ZIP file will bear the exact same name as the original, with `.zip` appended to the end (e.g.,
Financial_Report.zip). - If you compressed multiple items simultaneously: The system will generate a file generically named
Archive.zip.
It is highly recommended that you rename `Archive.zip` to something descriptive before sending it to a colleague, as “Archive” provides no context. Simply select the file, press the Return key on your keyboard, type the new name, and press Return again.
How to Unzip an Archive on Mac
The native utility works in reverse just as seamlessly.
To extract the contents of a ZIP file, simply double-click it. The system will instantly extract the contents into a new, uncompressed folder bearing the same name as the archive, located in the same directory. The original ZIP file is also preserved.