charset
coords coords [HTML4 only] [Obsolete since HTML5]\n\nFor use with object shapes, this attribute uses a comma-separated list of numbers to define the coordinates of the object on the page.
datafld
datasrc
download
href
hreflang hreflang\n\nThis attribute indicates the language of the linked resource. It is purely advisory. Allowed values are determined by BCP47 for HTML5 and by RFC1766 for HTML4. Use this attribute only if the href attribute is present.
media
methods
name
ping ping [html5]\n\nThe 'ping' attribute, if present, sends the URLs of the resources a notification/ping if the user follows the hyperlink.
rel
rev rev [HTML4 only] [Obsolete since HTML5]\n\nThis attribute specifies a reverse link, the inverse relationship of the rel attribute. It is useful for indicating where an object came from, such as the author of a document.
shape
target
type
urn