var options = { limitFilesCount: 1, previewImageSize: { width: 320, height:162 }, filters: { mime_types: [ {title: 'img', extensions: 'jpg,jpeg,gif,png'}, ] }, onBeforeUpload: function (file) { this.plupload.setOption( { 'multipart_params': { label: file.ext ? file.name.substr(0, file.name.length - file.ext.length - 1) : file.name, uuid: file.id, size: file.size, } }); } }; $('#imageUploader').uploader(options);