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Adobe Photoshop - Resizing and Resampling

These are instructions for how to resize or resample images and what situations are appropriate to do each.

VIDEO

Resampling and resizing are two similar but ways of adjusting the size of the image. The difference between the two is resizing will retain the same number of pixels while modifying the width and height of the image, while resampling can be used to change the height, width, and resolution of an image. Resizing is great for making small size changes to a file or for when you are drastically decreasing the physical size of a file to retain the clarity. Resampling will algorithmically recalculate the pixels in a file depending on whether you are increasing the number of pixels, or decreasing.

To Resize an Image:

  1. Select Image on the top menu bar, and click Image Size… from the dropdown menu.
  2. Uncheck Resample.
  3. Change Width, Height, or Resolution to the desired size, note the changes in the other dimensions.
  4. Select OK when size and resolution are correct.

To Resample an Image:

  1. Select Image on the top menu bar, and click Image Size… from the dropdown menu.
  2. Change Width/Height, and Resolution to the desired size, note the changes in the other dimensions.
  3. Note: changing Resolution to more than 150% (check my selecting Percent under the Dimensions dropdown) will significantly decrease the quality of the image and the effectiveness of resampling.
  4. Select OK when size and resolution are correct.

Resolution for Print and Web- Guidelines

  1. Minimum web resolution is 72 DPI 
  2. Minimum print resolution is 240 DPI
  3. Minimum photo printing resolution is any resolution from 500 DPI and up.

If you need further assistance please contact the Information Technology Help Desk at 920-424-3020 or helpdesk@uwosh.edu




Keywords:"image size", resolution, pixels, "print size", "the basics", PS   Doc ID:64194
Owner:Aarron V.Group:UW Oshkosh
Created:2016-06-17 11:01 CDTUpdated:2016-06-21 15:36 CDT
Sites:UW Oshkosh
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