The image tag generated should have an alt attribute to be XHTML 1.0 Transitionnal compliant.

File : kernel/common/ezwordtoimageoperator.php
Line : 75

Code should be :

                foreach( $replaceIcon as $icon )
                {
                    $icons[] = '<img src="' . $wwwDirPrefix . $iconRoot .'/' . $icon . '" alt="'. $replaceText .'"/>';
                }

Patch attached

Steps to reproduce

Use wordtoimage template operator with a text containing a pattern matched in wordtoimage.ini