Use Preview to Resize PDF Files on Your Mac

On Mac, you can easily create a PDF using the built-in Preview app, but the shortcoming is that there are not much available customization options, specifically about the quality, and by extension the file size, of the PDF generated. So if you convert several large pictures into a PDF file, the size may be larger than you desire.

You may need to compress the PDF file when you run into file size limitation trying to upload or share it with others (such as emailing it as an attachment to your friends). To save storage space, you can resize the existing PDF file in Preview, any other PDF utilities, or online website tools. In this post we will mainly show you how to resize a PDF file on Mac using the free Preview app.

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