How can i improve my progress on image-processing with deep learning?

edit

I'm totaly new for machine learning.I am wondering about how can i implement image-processing(background removal human body extraction/Video Object Segmentation) trained neural network on my web page?
Let's say I have a machine-learning model for human body extraction.Or I have built it from scratch.How can i implement this machine-learning model on my web page with javascript? I want to do something like this with javascript : https://www.exaptive.com/blog/how-i-m...

Which javascript ML library should i use?How can i get started?

I think that there is a following steps to do image-processing operations with AI.

Step 1-)Train a model with phyton and ready to go.

Step 2-)Pick up Javascript deep learning framework to work on web application with pre-trained model(Why javascript?I don't want to do deep learning operations on server side.Because of usually my users have big size video and image)

Step 3-)İmplement deep learning framework on web application

Step 4-)Then users can use this AI application on theirs data(video,image)

Please comment below if you have any recommendation.