120 documented entries

A practical reference for HTML <head> metadata.

Browse HTML metadata, link relations, Open Graph fields, and selected vendor tags. Check the syntax, copy an example, then read the source.

Browse Collections Source

alternate

apple-touch-icon

apple-touch-startup-image

author

canonical

dns-prefetch

expect

help

icon

license

manifest

modulepreload

pingback

preconnect

prefetch

preload

privacy-policy

stylesheet

terms-of-service

mask-icon

apple-itunes-app

apple-mobile-web-app-capable

apple-mobile-web-app-status-bar-style

apple-mobile-web-app-title

application-name

author

color-scheme

creator

description

format-detection

generator

google

google-site-verification

googlebot

googlebot-news

keywords

mobile-web-app-capable

msapplication-config

msapplication-TileColor

msapplication-TileImage

publisher

rating

referrer

robots

theme-color

twitter:app:id:ipad

twitter:app:id:iphone

twitter:app:id:googleplay

twitter:app:name:ipad

twitter:app:name:googleplay

twitter:app:name:iphone

twitter:app:url:googleplay

twitter:app:url:ipad

twitter:app:url:iphone

twitter:card

twitter:creator

twitter:creator:id

twitter:data1

twitter:data2

twitter:description

twitter:image

twitter:image:alt

twitter:image:height

twitter:image:type

twitter:image:width

twitter:label1

twitter:label2

twitter:player

twitter:player:height

twitter:player:stream

twitter:player:width

twitter:site

twitter:site:id

twitter:title

viewport

article:author

article:expiration_time

article:modified_time

article:published_time

article:section

article:tag

book:author

book:isbn

book:release_date

book:tag

fb:app_id

og:audio

og:audio:secure_url

og:audio:type

og:audio:url

og:description

og:determiner

og:image

og:image:alt

og:image:height

og:image:secure_url

og:image:type

og:image:url

og:image:width

og:locale

og:locale:alternate

og:site_name

og:title

og:type

og:url

og:video

og:video:alt

og:video:height

og:video:secure_url

og:video:type

og:video:url

og:video:width

profile:first_name

profile:gender

profile:last_name

profile:username

Standards First

Entries point to the HTML standard or the platform that defines them. Legacy fields are labelled plainly.

Working Examples

Copy a snippet, then adapt it to your page. Notes focus on mistakes that change browser or crawler behaviour.

HTML & Unhead

Build a complete head block from a collection, in HTML or Unhead's useHead format.

A practical reference for HTML <head> metadata.

Standards First

Working Examples

HTML & Unhead

Collections

Essentials

SEO Starter

Social Preview

Icons & Colors

PWA

Article