Overview DropzoneJS is an open source library that provides drag’n’drop file uploads with image previews. It's lightweight, doesn't depend on any other library (like jQuery) and is highly customizable.

Features

• Image thumbnail previews. Simply register the callback thumbnail(file, data) and display the image wherever you like
• Retina enabled
• Multiple files and synchronous uploads
• Progress updates
• Support for large files
• Complete theming. The look and feel of Dropzone is just the default theme. You can define everything yourself by overwriting the default event listeners.