Change field type to password (if it doesn't have the label password)
Example: http://changefieldtopw.pagedemo.co/
<!-- START code - change field type to password -->
<script>
document.addEventListener("DOMContentLoaded", function() {
var fieldName = 'Dog name';
var fieldLabel = window.__page_generator ? fieldName : base64_encode(fieldName);
document.querySelector('[name="' + fieldLabel + '"]').type = 'password';
});
</script>
<!-- END code - change field type to password -->
<!-- START code - change field type to password -->
<script>
document.addEventListener("DOMContentLoaded", function() {
var fieldName = 'Dog name';
document.querySelector('[name="' + fieldName + '"]').type = 'password';
});
</script>
<!-- END code - change field type to password -->