Robin image optimizer — save money on image compression

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$this'.

All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.

Mismatched text domain. Expected 'robin-image-optimizer' but got 'wrio-image-optimizer'.

All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.

Short PHP opening tag used with echo; expected "<?php echo $purchase_url ..." but found "<?= $purchase_url ..."

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$purchase_url'.

A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '__'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$upgrade_price'.

All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.