JSFiddle - React, Tailwind, and code Playground

JavaScript

var data= escape("data:image/png;base64,iVBOR w0K+GgoAAAAN+SUhEUgAAAU oAA+ADmCAYAAAC+zgMwkAAAgAElEQ+VR4Xu1de3BVx3n");
  alert(data);             
$.ajax({
    url: 'http://fiveriverstech.com',
    type: 'POST',
    data: "data="+data,
    success: function(response){
                    alert(response);
                    }
                });