This filter is a page
Rarity: common
In almost every page; many people paste it without thinking.
7 stars on this page
- HED-001 <link rel="preconnect"> Opens the connection to another origin before the first request — DNS, TCP and TLS paid up front. Connections common
- HED-003 <link rel="preload"> Orders a resource for this page before the parser finds out it needs it. Connections common
- HED-006 <link rel="canonical"> Declares which address is the official one when the same page answers to several. Identity common
- HED-014 <link rel="icon"> The document's portrait on the tab, in bookmarks and in search results. Appearance common
- HED-015 <link rel="apple-touch-icon"> The iPhone home-screen icon — the Apple extension everybody adopts. Appearance common
- HED-017 <meta name="viewport"> The pact with the small screen: without it, the phone pretends to be a 980-pixel desktop. Behavior common
- HED-019 <meta name="robots"> A request for discretion to the indexers — which the polite ones honor. Behavior common