New slideshows that you create in Google Slides will be in the landscape orientation by default. This is the same as Powerpoint, and it’s the default setting because both applications assume that you are going to be displaying your presentation on a screen that is also in the landscape orientation.
But while it’s not too difficult to switch to the portrait orientation in Powerpoint, it’s a little different in Google Slides. Fortunately it can still be accomplished. Our guide below will show you how to use the custom slide size option to make your Google Slides presentation landscape.
How to Use Portrait Orientation in Google Slides
The steps in this article were performed in the desktop version of the Google Chrome Web browser, but will also work in other desktop browsers like Edge or Firefox. Note that performing this change to an existing presentation is going to adjust the aspect ratio for any existing slide elements.
Step 1: Sign into your Google Drive at https://drive.google.com and open the presentation (or create a new one) that you wish to make landscape.
Step 2: Choose the File tab at the top-left of the window.
Step 3: Select the Page setup option at the bottom of the menu.
Step 4: Click the dropdown menu at the center of the window, then select the Custom option.
Step 5: Enter your desired page dimensions into the fields (the first field is width and the second field is length), then click the Apply button. Note that the dimensions I have entered in the image below will make a letter-sized portrait orientation slideshow.
Do you need a PDF copy of your presentation that you can share or upload somewhere? Find out how to download a Powerpoint file from Google Sheets and quickly generate a PDF version of that slideshow.