the user drag and drop zip file (containing images folder and html file) -> unzip it in our server. Retrieve the values in string from the html file. please see the attachment of the zip file. It will contain questions in table format we have to get the value in array. few more thing which are to be done is change the src in image tag remove html styling.
I have checked your post for detail and have 9+ year's of experience can help you with current expectation.
Let me know your available time and I will do my best to accommodate it.
Stay tuned, I'm still working on this proposal.