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twitter-cards

When the user wants to add or optimize Twitter Card metadata for X (Twitter) link previews. Also use when the user mentions "Twitter Card," "twitter:card," "twitter:image," "twitter:title," "X preview," or "tweet preview." For Facebook/LinkedIn previews, use open-graph.

日本語の概要は準備中です。原文の説明を表示しています。

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SEO On-Page: Twitter Cards

Guides implementation of Twitter Card meta tags for X (Twitter) link previews. Twitter falls back to Open Graph if Twitter-specific tags are missing; add both for best results.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Scope (Social Sharing)

  • Twitter Cards: X-specific meta tags; control how links appear when shared on X/Twitter

Card Types

TypeUse case
summarySmall card with thumbnail
summary_large_imageLarge prominent image (recommended; 1200×675px)
appMobile app promotion
playerVideo/audio content

Recommended Tags (summary_large_image)

<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Your Title">
<meta name="twitter:description" content="Your description">
<meta name="twitter:image" content="https://example.com/image.jpg">
<meta name="twitter:site" content="@yourusername">
<meta name="twitter:creator" content="@authorusername">
<meta name="twitter:image:alt" content="Alt text for image">
TagGuideline
twitter:cardRequired; summary_large_image for most pages
twitter:titleMax 70 chars; concise title
twitter:descriptionMax 200 chars; summary
twitter:imageAbsolute URL; unique per page
twitter:site@username of website
twitter:creator@username of content creator
twitter:image:altAlt text; max 420 chars; accessibility

Image Requirements

ItemGuideline
Aspect ratio2:1
Minimum300×157 px
Recommended1200×675 px
Max4096×4096 px
File sizeUnder 5MB
FormatsJPG, PNG, WebP, GIF (first frame only); SVG not supported

Common Mistakes

  • Missing Twitter Card tags (Twitter won't display images properly without them)
  • Using relative image URLs instead of absolute https://
  • Images too small or wrong aspect ratio
  • Title/description too long (gets truncated)

Implementation

Next.js (App Router)

export const metadata = {
  twitter: {
    card: 'summary_large_image',
    title: '...',
    description: '...',
    images: ['https://example.com/twitter.jpg'],
    site: '@yourusername',
    creator: '@authorusername',
  },
};

HTML (generic)

<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Your Title">
<meta name="twitter:description" content="Your description">
<meta name="twitter:image" content="https://example.com/image.jpg">
<meta name="twitter:site" content="@yourusername">
<meta name="twitter:image:alt" content="Alt text">

Testing

Related Skills

  • social-share-generator: Share buttons use Twitter Cards for X previews when users share; Cards must be set for share buttons to show proper previews
  • open-graph: OG tags; Twitter falls back to OG if Twitter tags missing
  • title-tag: Title tag often mirrors twitter:title
  • meta-description: Meta description often mirrors twitter:description
  • page-metadata: Hreflang, other meta tags
  • twitter-x-posts: X post copy and engagement (different from link previews)
  • twitter-card-image-generator: Programmatic Twitter Card image generation — 1200×675px, 2:1 ratio, player card posters, dark mode adaptations for ~40% of X users, timeline-safe zone design for mobile 1:1 crop, all 6 visual styles from og-image-generator. This skill covers how to SET the twitter:image tag; twitter-card-image-generator covers how to CREATE the image.

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