Photoshop

Adjust pixel aspect ratio

You can create a custom pixel aspect ratio in existing documents, or delete or reset pixel aspect ratios previously assigned to a document.

Assign a pixel aspect ratio value to an existing document

 With a document open, choose Image > Pixel Aspect Ratio and then choose a pixel aspect ratio that’s compatible with the video format that you’ll be using your Photoshop file with.

Create a custom pixel aspect ratio

  1. With a document open, choose Image > Pixel Aspect Ratio > Custom Pixel Aspect Ratio.
  2. In the Save Pixel Aspect Ratio dialog box, enter a value in the Factor text box, name the custom pixel aspect ratio, and click OK.

    The new custom pixel aspect ratio appears in both the Pixel Aspect Ratio menu of the New dialog box and in the Image > Pixel Aspect Ratio menu.

Delete a pixel aspect ratio

  1. With the document open, choose Image > Pixel Aspect Ratio > Delete Pixel Aspect Ratio.
  2. In the Delete Pixel Aspect Ratio dialog box, choose the item to delete from the Pixel Aspect Ratio menu, and click Delete.

Reset the pixel aspect ratios

  1. With the document open, choose Image > Pixel Aspect Ratio > Reset Pixel Aspect Ratios.
  2. In the dialog box, choose one of the following:
    Append
    Replaces the current pixel aspect ratios with the default values plus any custom pixel aspect ratios. This option is useful if you deleted a default value and want to restore it to the menu but also want to retain any custom values.

    OK
    Replaces the current pixel aspect ratios with the default values. Custom pixel aspect ratios are discarded.

    Cancel
    Cancels the command.