What do you think or your feedback on this HTML5 Simulator for learners?

VKC CodeBuilder is an HTML5 and JavaScript realtime simulator made especially for learners as well as code-testers. The simulator is online at https://vkccodebuilder.neocities.org and is accessible with any HTML5 supported modern browser like Firefox or Chrome. VKC CodeBuilder is real-time simulator which can help you making your website as soon as some code is fed into its editor.It has auto-save facility which can automatically backup all the data fed to avoid its loss during an error like system crash or shutdown. It can automatically sense and take precaution so as to avoid any undefined situation like an infinite loop. It has a simple interface supported much to a desktop than a mobile device and it helps building ideas and concepts fast and in comprehensive way. Visit https://vkccodebuilder.neocities.org and give it a try. And please comment on what do you think or your suggestion if any to me. Thank you.