When was the slide updated? Use the Add-on to automatically add a timestamp to the slide. Update the textbox easily using the Add-on when making new edits. Use the Extensions menu to add the current date and timestamp to the first Google Slides Slide. Using the Add-on a second time replaces the initial timestamp with a new timestamp. Use this to show viewers the last time the Google Slides was presented or major updates were made. This Add-on was developed by Alice Keeler. It is free and collects NO user data. No PII. Check out my other Add-ons at http://alicekeeler.com/codedebyalice