Test:
<!DOCTYPE HTML> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"> <script>document.write(atob('PG1ldGEgaHR0cC1lcXVpdj0iQ29udGVudC1UeXBlIiBjb250ZW50PSJ0ZXh0L2h0bWw7Y2hhcnNldD1JU08tODg1OS05Ij4='))</script>
Expected result: Windows-1252
Encoding used by browser is: Script did not run.
Result: Script did not run.