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Use when auditing article or blog pages for date markup, generating Article JSON-LD with datePublished/dateModified, or checking whether a CMS template surfaces dates correctly.
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/thedaviddias/Front-End-Checklist --skill content-datesコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
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SOC 職業分類に基づく
SKILL.md を表示中
| name | content-dates |
| description | Use when auditing article or blog pages for date markup, generating Article JSON-LD with datePublished/dateModified, or checking whether a CMS template surfaces dates correctly. |
| metadata | {"category":"seo","priority":"medium","difficulty":"intermediate","estimatedTime":"10","source":"frontendchecklist.io","url":"https://frontendchecklist.io/en/rules/seo/content-dates"} |
Google uses publication and modification dates to assess content freshness, which influences rankings for time-sensitive queries. Visible dates also build user trust by signalling that content is current and maintained.
dateModified in JSON-LD for every article or blog post2024-03-15T10:00:00Z) in structured data; human-readable in the visible UIdateModified only when content meaningfully changes — not on trivial editsOn each article or blog page, check: (1) Is there a visible published date in the page body or byline? (2) Does the JSON-LD Article or BlogPosting block include datePublished and dateModified properties in ISO 8601 format? (3) Does the <head> include <meta property="article:published_time"> and <meta property="article:modified_time"> Open Graph tags?
<time datetime="2024-03-15">March 15, 2024</time>.datePublished and dateModified to the Article JSON-LD block:
{
"@type": "Article",
"datePublished": "2024-03-15T10:00:00Z",
"dateModified": "2024-11-20T14:30:00Z"
}
<head>:
<meta property="article:published_time" content="2024-03-15T10:00:00Z">
<meta property="article:modified_time" content="2024-11-20T14:30:00Z">
dateModified automatically on content saves.Google's freshness algorithm rewards recently published or updated content for time-sensitive queries. Structured date markup lets Google confidently surface the correct date in search snippets; without it, Google must guess from page text or HTTP headers, often producing wrong or missing dates.
Verify that Article or BlogPosting JSON-LD includes both datePublished and dateModified in ISO 8601 format. Check that <time datetime='...'> elements in the body use machine-readable dates. Confirm dateModified updates when content changes, not just on every deploy.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/en/rules/seo/content-dates