Skill: kostja94/twitter-cards (version 1.1.0)

--- name: twitter-cards description: 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. metadata: version: 1.1.0 --- # 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 | Type | Use case | |------|----------| | **summary** | Small card with thumbnail | | **summary_large_image** | Large prominent image (recommended; 1200×675px) | | **app** | Mobile app promotion | | **player** | Video/audio content | ## Recommended Tags (summary_large_image) ```html <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"> ``` | Tag | Guideline | |-----|-----------| | **twitter:card** | Required; `summary_large_image` for most pages | | **twitter:title** | Max 70 chars; concise title | | **twitter:description** | Max 200 chars; summary | | **twitter:image** | Absolute URL; unique per page | | **twitter:site** | @username of website | | **twitter:creator** | @username of content creator | | **twitter:image:alt** | Alt text; max 420 chars; accessibility | ## Image Requirements | Item | Guideline | |------|-----------| | **Aspect ratio** | 2:1 | | **Minimum** | 300×157 px | | **Recommended** | 1200×675 px | | **Max** | 4096×4096 px | | **File size** | Under 5MB | | **Formats** | JPG, 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) ```tsx export const metadata = { twitter: { card: 'summary_large_image', title: '...', description: '...', images: ['https://example.com/twitter.jpg'], site: '@yourusername', creator: '@authorusername', }, }; ``` ### HTML (generic) ```html <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 - **X (Twitter)**: [Card Validator](https://cards-dev.twitter.com/validator) ## 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)


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: clean | SkillSpector: clean (LOW)