Awesome
<img src="slides-titler.png" height="25"> Slides Titler 
https://gsuite.google.com/marketplace/app/foo/117735578843
Create a tiny title to show up on each slide.
This add-on makes it easier to add the title to each slide. If you decide you don't want it anymore, there's an option to remove all the titles that were automatically added by this add-on.
<img src="screenshot-wide-menu.png" width="700"> <img src="screenshot-just-menu.png" width="700"> <img src="screenshot-wide-popup.png" width="700">Slides Titler Privacy Policy and Terms of Service:
https://docs.google.com/document/d/1VA-8WLP3njOA6chajUP9VYqJaFn9AjEMQ5jAT4FH5Vs/edit?usp=sharing
To learn to create your own Google Apps Scripts:
https://github.com/hchiam/learning-google-apps-script
To learn about publishing Google Workspace Add-ons:
https://developers.google.com/gsuite/add-ons/overview
https://developers.google.com/gsuite/add-ons/how-tos/publish-add-on-overview
https://www.youtube.com/watch?v=6jcc3xm7aRU
You'll need to find the "Store Listing" page inside "APIs & Services - Google Workspace Marketplace SDK", with a link like this: https://console.cloud.google.com/apis/api/appsmarket-component.googleapis.com/googleapps_sdk_publish?project=slides-titler