I have convert the image file upload to base64 string successfully and it able to display into the img src=""

`var formData = new FormData();  

//when we put the value is the upload file it work perfect  

//we crop and convert to base64 and display into the img src  

formData.append("file", document.getElementById('logo').files[0]);

How to convert the base64 to fileImage so that it can work