Create a data-uri. data-uri( *url* ) ## Parameters * *`url`* URL of an asset `url` cannot be external, and must not be written with an http protocol prefix. The following file extensions are supported: jpg, jpeg, gif, png, svg, svgz, ttf, woff ## Returns The created data-uri as a string inside a CSS url(). ## Examples ```crush background: silver data-uri(../images/stripe.png); ``` ```css background: silver url(data:); ```