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Use when applies to any page intended to be shared on X (Twitter). Use when auditing social sharing previews or adding social meta tags to a new site.
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Use when reviewing templates, rendered HTML, or shared components related to Implement accessible breadcrumb navigation. Validate the final browser-facing markup, not just the source framework abstraction.
Use when auditing metadata, crawlability, structured data, or indexability related to Implement valid BreadcrumbList schema. Verify the rendered HTML and HTTP response rather than relying only on source files.
Use when reviewing templates, rendered HTML, or shared components related to Declare UTF-8 character encoding. Validate the final browser-facing markup, not just the source framework abstraction.
Use when reviewing templates, rendered HTML, or shared components related to Set text direction for RTL languages. Validate the final browser-facing markup, not just the source framework abstraction.
Use when auditing a site's meta tag uniqueness, generating page-specific meta descriptions, or reviewing CMS templates that inject the same description globally.
Use when you need to find the 2-3 most popular and well-maintained npm packages relevant to a frontend checklist rule, validate they meet quality thresholds, and add them to the rule's frontmatter.
SOC 職業分類に基づく
| name | twitter-cards |
| description | Use when applies to any page intended to be shared on X (Twitter). Use when auditing social sharing previews or adding social meta tags to a new site. |
| metadata | {"category":"seo","priority":"medium","difficulty":"beginner","estimatedTime":"10","source":"frontendchecklist.io","url":"https://frontendchecklist.io/en/rules/seo/twitter-cards"} |
Pages shared on X without Twitter Cards show only a bare link; Cards add an image and description that significantly increase click-through rates from social traffic.
<meta name="twitter:card" content="summary_large_image"> to enable rich previews when shared on X (Twitter)twitter:card, twitter:title, twitter:descriptionog:title, og:image) if Twitter-specific tags are absentsummary_large_image: 1200×630 px, max 5 MB, JPG/PNG/WebPInspect <head> for <meta name="twitter:card">, <meta name="twitter:title">, <meta name="twitter:description">, and <meta name="twitter:image">. Verify the card type is valid (summary or summary_large_image). Test the URL in the X Card Validator.
Add the required Twitter Card meta tags to the <head>. For article/blog pages use summary_large_image. Ensure twitter:image points to an absolute URL of an image at least 300×157 px (ideally 1200×630 px) under 5 MB.
Explain how Twitter Cards enhance shared links, the difference between summary and summary_large_image card types, and how X falls back to Open Graph tags.
Review metadata generation, rendered HTML, structured data, and response headers related to Add Twitter Card meta tags. Flag exact routes or templates where search-facing output violates the rule, and describe how to verify the final page output.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/en/rules/seo/twitter-cards