4th December 2019


How do you reduce the size of a JPEG on a Mac?

Open in Preview, in the "Tools" menu select "Adjust Size" there you can change the dimensions and/or resolution. Instead or in addition you can export as jpeg ("File" menu, "Export") and select a low quality setting, right there it will give you an estimate of the new file size.

In this manner, how do I reduce the file size of a photo on a Mac?

To reduce an image's file size without changing its dimensions:
  1. Choose Tools > Adjust Size.
  2. Select “Resample image.”
  3. Enter a smaller value in the Resolution field.

How do I resize an image in photos on a Mac?

Method 1 Resizing an Image in Preview
  1. Navigate to the image you wish to resize.
  2. Drag the image to the Preview icon in the Dock or Finder.
  3. Click the edit button (a square with a pencil) to switch to Edit Mode.
  4. Click the “Tools” menu and select “Adjust Size”.
  5. Change the resolution.

How do you change the size of an image?

Resize to an exact proportion
  1. Click the picture, shape, text box, or WordArt that you want to resize.
  2. Do one of the following:
  3. On the Size tab, under Scale, enter the percentages of the current height and width that you want to resize to, in the Height and Width boxes.
  4. Clear the Lock aspect ratio check box.
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