The Quickest Way to Upload Files to your WordPress Sites The MainWP File Uploader Extension  is a simple way to upload files to your child sites from one centralized location. It gives you the ability to upload multiple files to all of your child sites at the same time. There are multiple ways to upload files to your servers, but the MainWP File Uploader extension is the only way that doesn’t require logging into each sites cPanel or FTP individually. With just a few click, you can upload a file to any of your sites (see supported file types below). With the MainWP File Uploader Extension Upload files to multiple sites at once Upload multiple files to multiple sites at once Use existing folders or create new ones Overwrite existing files Supported File Types .php .css .xml .js .txt .zip .rar .ico .html .po .mo .jpg .jpeg .png .bmp .gif .pdf .doc, .docx .ppt, .pptx, .pps, .ppsx .odt .xls, .xlsx .mp3 .m4a .ogg .wav .mp4, .m4v .mov .wmv .avi .mpg .ogv .3gp .3g2 Save Time Upload multiple files to multiple sites at once. Speed up your workflow Send repetitive files to all sites from a single centralized location. Speed up the Cloning or Restoring Process Quickly send your backup files to your child sites.