How to Make a File Size Smaller on Mac

Kyle Wood

Mac, Tutorials

Do you find yourself struggling with large file sizes on your Mac? Whether you’re trying to send a file via email or upload it to a website, dealing with large file sizes can be a hassle. In this tutorial, we’ll explore various methods to make your file size smaller on Mac, allowing for easier sharing and storage.

Method 1: Compressing Files

If you have a file that contains a lot of data or media, compressing it can significantly reduce its size. Follow these steps to compress a file on your Mac:

  • Step 1: Locate the file you want to compress.
  • Step 2: Right-click on the file and select “Compress” from the dropdown menu.
  • Step 3: Wait for the compression process to complete. This may take a few moments depending on the size of the file.

Once the compression is finished, you’ll find a new compressed version of your file in the same location. This compressed file will have a smaller size compared to the original.

Method 2: Adjusting Image Size

If you’re dealing with image files, reducing their dimensions can significantly decrease their size. Here’s how you can do it:

  • Step 1: Open the image file using Preview or any other image editing software.
  • Step 2: Click on “Tools” in the top menu and select “Adjust Size.”
  • Step 3: In the dialog box that appears, adjust the width and height values to decrease the dimensions of your image. Make sure to maintain the aspect ratio to avoid distortion.
  • Step 4: Click “OK” to save the changes.

By reducing the dimensions of your image, you’ll effectively decrease its file size without compromising too much on quality.

Method 3: Removing Unnecessary Data

In some cases, files may contain unnecessary data such as hidden elements or metadata. Removing this data can help reduce the file size. To remove unnecessary data from a file:

  • Step 1: Open the file using an appropriate software (e.g., Microsoft Word for .docx files).
  • Step 2: Click on “File” in the top menu and select “Save As.”
  • Step 3: Choose a different format for saving your file, such as “Plain Text” or “Text Only.” This will strip away any unnecessary data.
  • Step 4: Save the file with a new name to preserve the original version.

This method is particularly useful for text-based files and can significantly reduce their size by eliminating unwanted elements.


Making your file size smaller on Mac doesn’t have to be a complicated process. By compressing files, adjusting image sizes, and removing unnecessary data, you can effectively reduce their size without sacrificing quality. Experiment with these methods to find what works best for your specific needs and start enjoying easier sharing and storage of your files!

I hope you found this tutorial helpful. If you have any questions or suggestions, feel free to leave them in the comments below. Happy optimizing!

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