Text editor integration to the website [on hold]

I am about to create a website where users use document template to edit with their own details (e.g. resume, biography) and save it as pdf. Currently, the idea is to allow users only edit and download without saving the document.

And my question is, is possible to use Google Docs for this project?

If yes, pls can you brief how?

And, if not, what alternative online service you recommend?

Really need your advice please