How to Make JPG Smaller on Macbook

A large JPEG image on your MacBook is useful for design work, but sending it via email can be troublesome, as many Internet service providers (ISPs) limit the size of attachments. Thankfully, your computer has a built-in image editing application that enables you to reduce the size of images. When editing images, create a copy of the original file rather than altering the only available copy of the image.

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Reduce the size of your MacBook's JPEG images to make them attachment friendly.

Preview Photo Reduction

Step

Click the "Go" menu at the top the MacBook's screen and click "Applications." Double-click "Preview" in the "Applications" window to open the photo-editing application.

Step

Click the "File" menu, and then click "Open." Click the photo you wish to edit and select "Choose" in the pop-up dialog box to open the photo in Preview.

Step

Click the "Tools" menu at the top of the application and click "Adjust Size."

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Type the new size in the "Size Adjustment" window and press "Return" on your keyboard to apply the new file size.

Step

Click the "File" menu, and then click "Save As." Enter a new name for the photo and click "Save."

iPhoto JPG Reduction

Step

Double-click "iPhoto" in the "Applications" folder in "Finder." Click the "File" menu.

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Click "Import to Library" and double-click the JPG you want to edit in iPhoto.

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Click the file in iPhoto to highlight it, and then click the "File" menu. Click "Export" and click "File Export."

Step

Click "JPEG" in the "Kind" drop-down menu, and then click "small" or "medium" from the "Size" drop-down menu. The "small" option is suitable for emailing the file and uploading it to a website, whereas "medium" is suitable for users with high-speed Internet.

Step

Click "Export" and choose the save location for the image. Click "OK" to finish the resizing process.