An imported feature from PowerPoint, Alignment Guides at the slide boundary could be a nice addition. I use those a lot, and I can’t really know what’s actually gonna show up in the presentation and what isn’t without them if an image is larger than the slide.
Hello @sl45
Please point us to this feature in the PowerPoint, so we can check it out. Our editor already has Alignment Guides feature, it’s located in File > Advanced settings: ONLYOFFICE Docs - Accessibility features - UI tweaks