Reference: http://www.w3schools.com/tags/tag_link.asp
<link> Attributes:
| Attribute | Value | Description |
|---|---|---|
| charset | char_encoding | Not supported in HTML5. Specifies the character encoding of the linked document |
| href | URL | Specifies the location of the linked document |
| hreflang | language_code | Specifies the language of the text in the linked document |
| media | media_query | Specifies on what device the linked document will be displayed |
| rel | alternate archives author bookmark external first help icon last license next nofollow noreferrer pingback prefetch prev search sidebar stylesheet tag up |
Required. Specifies the relationship between the current document and the linked document |
| rev | reversed relationship | Not supported in HTML5. Specifies the relationship between the linked document and the current document |
| sizes |
HeightxWidth any |
Specifies the size of the linked resource. Only for rel="icon" |
| target | _blank _self _top _parent frame_name |
Not supported in HTML5. Specifies where the linked document is to be loaded |
| type | MIME_type | Specifies the MIME type of the linked document |