function sendFile(fileData) { var formData = new FormData(); formData.append('imageData', fileData); $.ajax({ type: 'POST', url: '/your/upload/url', data: formData, contentType: false, processData: false, success: function (data) { if (data.success) { alert('Your file was successfully uploaded!'); } else { alert('There was an error uploading your file!'); } }, error: function (data) { alert('There was an error uploading your file!'); } });