What is the best way to open power point files in a browser?

Question

JavaScript

I want to make a program to switch slides on my website using my phone. I plan to upload presentations to my node.js site, but how to open such files, how to add the ability to edit and save? I found several options:
viewerjs.org/examples
https://gitbrent.github.io/PptxGenJS/
What is better to use, maybe there are better options?

Answer 1

Viewer.js doesn't work with *.ppt.