How to change document's page size?

To change your document's page size, please follow the steps below:

1. Open the document which you want to change the page size.
2. Tap on "Edit" button on the bottom right and tap on "Properties" button.

3. Select the the document size from the options under "Page Size." You can also manually adjust the image aspect ration by using "Customs."

4. Finish your adjustments and press "Done" to save your document.