When you use a 4:3 aspect ratio slide on a 16:9 screen, you end up with black bars on either side of the content, which can be distracting for your audience and give an overall bad impression. This is a small detail, but you want to get it right. Using a 16:9 aspect ratio allows you to make better use of the available screen space, providing more room for your content. This is especially important if you're presenting complex data or visuals that require clarity and detail. By taking the time to create slides with the correct aspect ratio, you can ensure that your presentations look polished and professional, allowing your content to shine without unnecessary distractions. If, however, you know that you will have a 4:3 screen that can not be adjusted, then using 4:3 slides may be a better option.

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More tips on my website: https://www.garrreynolds.com