15 responses

  1. Mel Yow
    September 5, 2016

    Thank you for the article. If I am correct, the article assumes that one has a picture file in Finder. How does one re-size a picture that is already in Photos.
    Thank you.

    • M. Durio
      September 5, 2016


      A little more convoluted workflow, but you could also drag a picture out of Photos to Desktop. Use Preview as described above. Rename resized picture (or not) and drag back into (import into) Photos.

  2. Dick
    September 5, 2016

    You can resize a photo in the Photos app, either while using “Share” or while in the process of exporting an image from Photos. Of course “Crop” is closely related to, and commonly used in conjunction with, resizing.

    • Paul
      September 5, 2016

      Great tip Dick, never noticed the “Export” option in Photos allows for resizing to custom sizes.

  3. Dave A
    September 6, 2016

    If you need to do this often, set up an Automator service.

  4. Hamza Tariq
    September 6, 2016

    Ahan. I didn’t knew about this. I was previously using the crop function as a resize. It at least allowed me to get hands on videos without wasting time on loading other apps for resize.

  5. Eljayem
    September 6, 2016

    I’ve found that, since I edit a lot of pictures for use in a printed newsletter, I get the best results in Preview>Tools>Adjust size by the following:
    1. Change the DPI value to what you need for publication (I use 300 or higher).
    2. Go to sizing and create the finished size you want.
    3. Execute the process.

    If you resize and then change the DPI you get a totally and sometimes surprising different result.

  6. Traci Bowman
    October 29, 2017

    I’m wondering if this is how I can resize clip art? I’m very computer stupid. Lol.
    Thanks for any help!

  7. Suresh
    November 8, 2017

    Never knew that it has this option too. Phew, I was looking for the website to resize.

    Thanks for the article, and also the video.

  8. Winifred
    January 11, 2018

    great. it was quite helpful

  9. Linda
    January 15, 2018

    can you resize a photo to 740 x 740 pixels on the mac

  10. felicia
    January 21, 2018

    this is absolutely no help!

  11. Stefani S
    January 31, 2018

    If you resize an image here in Preview does that remain the default then? I did resize an image to 11×14 and now it seems every image that I want to have printed won’t print larger than 11×14 because ‘resolution is too low’. How do I get it back to the original defaults?

  12. T’Neal
    February 26, 2018

    When i try to make it as large as my desktop it becomes all poorly made how would one fix this?

    • hut
      February 27, 2018

      If the image looks low quality as a background picture, it is likely low resolution. The image must be high resolution to look sharp as a desktop background.

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