The filetype and maximum size of the file is adjustable. Size of the uploadable file is limited to 15728640 Bytes ie 15 Mbytes and the following filetypes are allowed: jpg, jpeg, png, gif, xps, pdf, zip, rar, doc, docx, xls, xlsx You can modify this in the first lines of the function.js file. The uploaded files are arriving into the upload_files folder, where a .htaccess file provides for the security. For example that man cannot see, cannot list what kind of files can be found in the folder. I aimed to create an easily manageable, modern CSS design, which you can easily modify e.g. with Adobe® Dreamweaver® software. You can use the script immediately, it is very easily manageable.