JAVASCRIPT

filebase64 template

import FileBase from "react-file-base64";   

//in react body
<FileBase
              className="form-control form-control-sm"
              id="formFileSm"
              type="file"
              multiple={false}
              onDone={(base64) =>
                setPostData({ ...postData, selectedFile: base64 })
              }
            ></FileBase>