How to combine web application and machine learning? [closed]

I am a rookie in ML and Web development and I am creating my college project that is "Web Application that can extract words from image". So, I have a web application written completely in the usual Html/CSS/javascript in that user upload an image and I wanted to send it to my python program that has libraries "EasyOCR", etc that extract words from the image and show it to the user in my web page. And I don't know how to do that, please help me!! Some other questions---

1. Who will be the mediator between my web page and the python program and how to do it?
2. How can I run my python program online for image processing? Please explain in detail.