Real Uploader 4 has the following changes compared to Real Ajax Uploader:
- Implemented with RequireJS
- CSS theme using SASS
- Removed jQuery dependency
- Refactor internal code
- New CSS and template structure
- Removed Flash support
- Removed support for no-HTML5 browser (IE7, IE8, IE9)
- Significant changes to server script upload.php
- No server script for ASPX, the version 4.2.0 will provide support for ASPX server script
- Better support for Mobile
- Fast and High quality images resize on browser
- Change name of options and added new options