Version history: Slides makes it easy for you to see all previous iterations of your deck and revert back to an earlier version if necessary. Here you can view all past editing rounds, going right back to when the presentation document was first created.
Go to File and choose Version history, then click on See version history. Click on the different dates to see a preview of how the document looked at the time. If you are just looking for a particular slide, line of text, or image that was deleted, you can simply copy and paste it from the earlier version, close the Version History window, and paste it into the latest version.
If you want to completely revert your document saudi number format back to an earlier state, click the Restore this version button at the top left. If you choose to do this, bear in mind that your current version will be completely overwritten by the version you are restoring.
Naming versions: If there are multiple collaborators working in your deck, the Version History window can sometimes be difficult to keep track of, especially if there are multiple iterations in the same day. To better track the different iterations that you work on, you can easily name different versions. To do this, in the Version History window, double click the date of the version you want to name. This opens up a dialog box in which you can type a new name.
For more help on using this feature, check out this YouTube tutorial on getting the most out of version control in Google Slides.
Advanced: Converting to and from Google Slides
Google Slides has tried to make it easy to convert to and from other presentation software. Here we’ll cover the basics of how to convert using some popular programs. Keep in mind that different presentation software have different features, so certain slide elements like animations or colour palettes may not convert exactly. When converting any file type, always have a thorough check through your slides for any errors before presenting!