Re-sizing an Image using Preview

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Level 1

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Re-sizing an Image using Preview

This has been inconsistent for a long time. Artists go through many hoops using preview to resize their images for galleries. Preview should enable a desired size to be entered but instead one has to continually change the length or width measurement and reduce down and reduce down. Eventually you get your desired size!!!! You save the image to the desktop. You open the image up and the size is different. Conversely, you change change the size through the markup tool, but still the same thing happens. Also you can export the image but again the size is different. Its an area whereby apple really need to pay some attention as its a huge aggravation - its so time consuming. I would love this issue to be corrected. If any one has any other suggestions please reach out to me. As a general rule, galleries require 2mb images. They also require JPG, not JPEG. There's nowhere to change the file type to JPG. I didn't think there was any difference between JPEG and JPG but the galleries do.

Posted on Sep 4, 2022 11:17 PM

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Answer 1

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Yer_Man

Level 10

164,010 points

Sep 4, 2022 11:40 PM in response to rome beauty

Start by being clear in what you mean by "size"? It can mean either the dimensions of the image (length x breadth), measured in pixels, or the size of the file, measured in KB or MB. You seem to be referring to the latter. So you're not resizing the image at all, you're changing the quality of the jpeg compression. And that is the key: the lower you set the quality slider, the smaller the file will be:

As for the Jpg/Jpeg issue: you can rename any file in the Finder, including changing the file suffix.

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Answer 2

Sep 5, 2022 8:30 AM in response to rome beauty

It is very unclear what you are getting at.

I scale images with Preview every day, and I never got one wrong size.

As Yer_Man said, it will be helpful if you can clarify what size you are talking about.

The pixel dimensions of a file are very clearly visible in Preview if you press Command-I, as are other informations.

For example:

If you scale the image, it is also very clear what you will get a very clear sheet in which to set the dimensions or scale that you want, including resolution (which is important for printing, no so much onscreen):

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Re-sizing an Image using Preview

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