How to Convert a Photo to a Certain Size

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Computers and digital cameras make it far easier to store and share photos. One drawback is that cameras are producing increasingly larger photos, meaning they are larger in file size and are therefore harder to send via email. Windows and Mac OS X offer quick, free ways of converting photos to specific sizes. This process involves no third-party photo software.

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In Windows

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Step 1

Find the picture you wish to re-size. Right-click it and then click "Re-size pictures."

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Step 2

Choose which size you would like your photo to be. You can choose from the three defaults or you can set your own value. Click "Advanced" and then check "Custom" and enter a preferred size.

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Step 3

Click "OK." The original file will be unedited, with an edited version next to it.

On Mac OS X

Step 1

Open iPhoto. Locate the photo you wish to re-size. Click it so that it is highlighted by a yellow border.

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Step 2

Click "File" then "Export." Choose the kind of image you want (JPG by default) and the quality.

Step 3

Click the drop-down menu next to size section. Choose one of the default options, or select "Custom." If you choose custom, enter the maximum dimension value.

Step 4

Click "Export," choose where to save the file and then click "OK."

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