How to Know Dpi of Image Mac

Alicia Santos

Mac, Tutorials

Are you wondering how to determine the DPI (dots per inch) of an image on your Mac? The DPI of an image is a measure of its resolution and can be useful in various situations, such as printing or determining image quality. In this tutorial, we will explore different methods to find the DPI of an image on your Mac.

Method 1: Using Preview

If you have the Preview app installed on your Mac, you can easily check the DPI of an image using the following steps:

  1. Open the image file in Preview by double-clicking it or right-clicking and selecting “Open With” > “Preview”.

  2. In the menu bar, click on “Tools” and then select “Adjust Size”.

  3. A window will appear showing the dimensions and resolution of the image.

  4. Look for the value next to “Resolution”. This indicates the DPI of your image.

Using Preview, you can quickly determine the DPI of any image on your Mac without needing any additional software.

Method 2: Using Photoshop

If you have Adobe Photoshop installed on your Mac, it provides a more detailed analysis of an image’s properties, including its DPI. Here’s how you can find the DPI using Photoshop:

  1. Launch Photoshop and open your desired image by going to “File” > “Open”.

  2. In Photoshop’s menu bar, click on “Image” and then select “Image Size”.

  3. A dialog box will appear displaying various options related to the image size and resolution. This will indicate the DPI of your image.

Photoshop offers advanced image editing capabilities, making it an excellent choice for professionals who require detailed information about an image’s DPI.

Method 3: Using Terminal

If you prefer using Terminal to determine the DPI of an image, you can use the “sips” command-line tool. Follow these steps:

  1. Open Terminal on your Mac. You can find it in the “Utilities” folder within the “Applications” folder or use Spotlight search.

  2. Once Terminal is open, navigate to the directory where your image is located using the “cd” command.

  3. Type the following command and press Enter: sips -g dpiHeight -g dpiWidth [image file name]

  4. The terminal will display the DPI values for both height and width of your image.

Using Terminal may be a bit more technical, but it provides a quick way to obtain essential information about an image’s DPI without relying on graphical user interfaces.


Determining the DPI of an image on your Mac is essential in various scenarios, such as printing or ensuring optimal image quality. With methods like using Preview, Photoshop, or Terminal, you can easily find this information. Whether you prefer a user-friendly interface or a command-line approach, these methods will help you accurately determine the DPI of any image on your Mac.

Remember that while knowing the DPI is important, it’s also crucial to consider other factors like image dimensions and file format when working with images on your Mac.

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