How to embed a PDF file in a website to be able to edit it

I would like to know if you know of any service to be able to edit pdf files online without having to download them.

My idea is to integrate this service in my web server and through some online pdf viewer I can edit the pdf.

I have contacted Adobe and a representative has told me that they do not offer this service, I do not know if adobe has any service asin or if you know someone

Thank you