With 9PDF, you can easily change the page size of your PDF. You can also add margins to your pages.
To begin, drag and drop your PDF file into the upload box at the top of the screen.
You can customize the following settings:
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Page Size:
Choose from preset sizes or enter your custom size.
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Position:
Choose where to place the original page in the new PDF. By default, it will be placed in the Center.
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Margin:
Set the distance to the edge of the page.
You can see how your pages will look in the Preview section.