156 lines
3.6 KiB
Markdown
156 lines
3.6 KiB
Markdown
---
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title: HTML meta tags
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category: HTML
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updated: 2020-03-20
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weight: -3
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---
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### Meta tags
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```html
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<meta charset='utf-8'>
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```
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```html
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<!-- title -->
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<title>···</title>
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<meta property='og:title' content='···'>
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<meta name='twitter:title' content='···'>
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```
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{: data-line="2"}
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```html
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<!-- url -->
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<link rel='canonical' href='http://···'>
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<meta property='og:url' content='http://···'>
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<meta name='twitter:url' content='http://···'>
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```
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{: data-line="2"}
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```html
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<!-- description -->
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<meta name='description' content='···'>
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<meta property='og:description' content='···'>
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<meta name='twitter:description' content='···'>
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```
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{: data-line="2"}
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```html
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<!-- image -->
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<meta property="og:image" content="http://···">
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<meta name="twitter:image" content="http://···">
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```
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```html
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<!-- ua -->
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<meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1'>
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```
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```html
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<!-- viewport -->
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<meta name='viewport' content='width=device-width'>
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<meta name='viewport' content='width=1024'>
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```
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### More opengraph
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```html
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<meta property='og:site_name' content='···'>
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<meta property='og:type' content='website'>
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```
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```html
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<meta property='fb:app_id' content='···'>
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<meta property='fb:admins' content='UID1,UID2'>
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<!-- ···unless there's app_id -->
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```
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```html
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<meta property='og:audio' content='http://···/theme.mp3'>
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<meta property='og:video' content='http://···/trailer.swf'>
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```
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See: [OpenGraph protocol](https://developers.facebook.com/docs/opengraphprotocol/) _(developers.facebook.com)_
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### Opengraph for articles
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- `article:published_time`
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- `article:modified_time`
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- `article:expiration_time`
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- `article:author`
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- `article:section`
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- `article:tag`
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### Apple-only
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```html
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<meta name='format-detection' content='telephone=no'>
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```
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## Progressive web apps
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### Add to homescreen
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```html
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<meta name='mobile-web-app-capable' content='yes'>
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<meta name='apple-mobile-web-app-capable' content='yes'>
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```
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```html
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<meta name='apple-mobile-web-app-status-bar-style' content='black'>
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<!-- black | black-translucent | default -->
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```
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### Theme color
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```html
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<meta name='theme-color' content='#ff00ff'>
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```
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Android-only.
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See: [Theme color](https://developers.google.com/web/updates/2014/11/Support-for-theme-color-in-Chrome-39-for-Android)
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### Manifest
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```html
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<link rel='manifest' href='/manifest.json'>
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```
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Android-only.
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See: [Manifest](https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/)
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### Icons
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```html
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<!-- Minimal -->
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<link rel='icon' type='image/png' href='favicon@32.png'>
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<link rel='icon' sizes='192x192' href='icon@192.png'>
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<link rel='apple-touch-icon' href='icon@152.png'>
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<meta name='msapplication-square310x310logo' content='icon@310.png'>
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```
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```html
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<!-- Apple -->
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<link rel='apple-touch-icon' href='touch-icon-iphone.png'>
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<link rel='apple-touch-icon' sizes='76x76' href='touch-icon-ipad.png'>
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<link rel='apple-touch-icon' sizes='120x120' href='touch-icon-iphone-retina.png'>
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<link rel='apple-touch-icon' sizes='152x152' href='touch-icon-ipad-retina.png'>
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```
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```html
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<!-- Microsoft -->
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<meta name='msapplication-square70x70logo' content='icon_smalltile.png'>
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<meta name='msapplication-square150x150logo' content='icon_mediumtile.png'>
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<meta name='msapplication-wide310x150logo' content='icon_widetile.png'>
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```
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Chrome on Android recommends [192x192](https://developers.google.com/web/updates/2014/11/Support-for-theme-color-in-Chrome-39-for-Android).
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See: [Icons](https://developers.google.com/web/fundamentals/design-and-ui/browser-customization/)
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## Reference
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{: .-one-column}
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* <https://dev.twitter.com/cards>
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* <https://developers.facebook.com/docs/opengraphprotocol/#types>
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{: .-also-see}
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