Is it possible to use external control elements with an embedded Google Slides presentation?
I'm going to be working on a project that involves embedded Google Slides presentations, and I haven't been able to find any information regarding whether or not it is possible to use external HTML elements as controls (play, next slide, previous slide, etc.) for a presentation or if I'm stuck with the default controls in the iframe. Anyone have experience with this?
Answer:
Due to the same-origin policy, this will be unable to be done.
More Information:
Embedding a Google Slides presentation in an HTML page will require using some sort of object like an iframe which is going to be subject to the same-origin policy restrictions.
In practice, this means that if you have a page embedded inside another, they can not interact with one another unless they have the same origin.
As per the MDN documentation about the same-origin policy:
That is to say, unless the Slides file and the webpage are hosted on the same domain, no interaction between them will be able to be accomplished - this even includes Google Sites as Sites and Slides are hosted on different sub-domains (https://sites.google.com/ and https://docs.google.com/presentation/ respectively).