JS file upload

Libraries for adding file upload to the js client.

https://cssauthor.com/javascript-file-upload-library-plugins/ - 25+ Best JavaScript File Upload Library & Plugins
https://uppy.io/ - open source and easy to set up. I used it in one of the projects
https://pqina.nl/filepond/ - open source, authors want to earn money on additional image editing features
https://haacked.com/archive/2010/07/16/uploading-files-with-aspnetmvc.aspx/ - bit on handling uploaded files on server side
https://github.com/compact/angular-bootstrap-lightbox - simple modal image preview for angular.js
https://github.com/fengyuanchen/viewerjs - possible extension to preview uploaded files. However probably something similar can be achieved without library