Is it possible to integrate some kind of file editor into the site?

Question

CMS

I got the idea to make my own blog site. It just so happened that my wife and I started a common diary in which we write down certain events and so on. It turned out that due to self-isolation now separately and fill out together is not possible. I decided to transfer it to the Internet so that it becomes possible again. At first I planned to just make a powerpoint presentation and upload it to google docs, but the option turned out to be bad, because slide transitions are not preserved, and 200MB is too large for online editing. I came to the conclusion that it is certainly possible to make an online gallery with the ability to edit each picture (insert text over a page scan, picture, video or drawing in paint). How to do this, what is possible to integrate, I have no idea, I hope I will find the answer here.

Answer 1

For example, older versions were more functional https://ckeditor.com/

Answer 2

Start a new diary in ppt and upload the file to the same dropbox, for example.
As soon as 3-5 slides are ready, transfer to the general one (which is already 200mb), and start a new one again.

Answer 3

15 seconds on google yielded this (js image editor query):
tui image editor
Looks like what you need. Load More Sockets to Edit Realtime Together

Answer 4

Take office 365 and don't worry. The task that you are trying to solve has a huge number of nuances in the complex and the need for future improvements