Magic variables not parsing on frontend

You created a new custom attribute for your product or category in Magento, but when you add magic variables, such as:

<img src="{{media url="logo.png"}}" alt="image" />

whole thing messes up formatting and HTML, and your image is not visible on frontend. Seems like Magento doesn’t transform {{}} to image URL – reason is simple – you didn’t set your attribute’s is_html_allowed_on_front value to Yes (or “1″). Set it to true, and Magento starts parsing those magic variables.