Anybody said that this one is a simple task to solve within a few hours.
Please read all the posts and take carefully onto every little hint, which you can find. You will find everything you need in the post, to solve your issue.
Why this post is messy? Perhaps because it is the first and only one which handle this issue. I am almost sure you won’t find any other post which handles this thematic in such an detailed maner.
Your steps would be the following to solve this issue.
- Creating an HTML-Component-File-Selector, which gather all needed informations including the base-64-code.
- Sending all gathered data to your site.
- Using the provided code from the Wix-Api on back-end (send DATA to backend).
- Handle the data on backend.