How to Change Slide Size in Google Slides - All Things How
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WEBFeb 9, 2021 · Scroll down and select ‘Page setup’ from the File menu. Click on the box which displays the current aspect ratio, i.e., 16:9 in Page setup. You can now choose one of the three in-built options, Standard 4:3, Widescreen 16:9, or Widescreen 16:10. If you want another aspect ratio for your slides, click on ‘Custom’, the last option.
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