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cccskills
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external-links

Review external links in articles to identify unsupported factual claims and suggest authoritative sources. Check link attributes used for security and for identifying paid, affiliate, or untrusted links, then guide corrections to citations and markup.

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原文查看原文说明

Use when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes (nofollow, noopener) are correctly set.

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适用场景

  • Find factual claims that lack source links
  • Add citations to official or research sources
  • Review external link security attributes
  • Check paid and affiliate link attributes

包含的文件(2)

  • SKILL.md3.0 KB
  • references/rule.md3.7 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

Add relevant external links

Outbound links to authoritative sources strengthen the credibility of your content and are considered a positive trust signal by Google. Pages that cite their sources rank better for informational queries than those that make unsupported claims.

Quick Reference

  • Link out to authoritative sources that support your claims — this demonstrates E-E-A-T and improves credibility
  • External links to reputable sites do not hurt your SEO; Google treats them as a trust signal
  • Use rel="noopener noreferrer" on external links; add rel="nofollow" only for untrusted or paid links

Check

For each content page, count the number of external <a href> links pointing to domains other than the current site. Check: (1) Are factual claims backed by links to authoritative sources (government sites, peer-reviewed research, official documentation)? (2) Do all external links have rel="noopener noreferrer" for security? (3) Are paid or sponsored links marked with rel="sponsored" or rel="nofollow"?

Fix

  1. Identify factual claims in the content that cite statistics, research, or expert consensus without a source link.
  2. Find the authoritative source (study, official documentation, government data) and add an inline link.
  3. Add rel="noopener noreferrer" to all external links for security.
  4. Add rel="sponsored" to paid or affiliate links; rel="nofollow" to links you cannot vouch for.
  5. Avoid linking to competitor sites for their main commercial pages; prefer linking to neutral third parties. Example: Replace "Studies show 60% of users abandon slow pages" with: "According to <a href="https://web.dev/performance/" rel="noopener noreferrer">Google's web.dev research</a>, 60% of users abandon pages that take over 3 seconds to load."

Explain

Google uses the context of your outbound links as a signal of content quality. Pages that cite reputable external sources are treated as more trustworthy than those making unsupported assertions. Properly attributed external links also demonstrate E-E-A-T by showing you have researched the topic from primary sources.

Code Review

Parse all <a href> elements with external URLs (different domain than the site). Verify each external link has rel="noopener noreferrer". Flag paid/affiliate links missing rel="sponsored". Count external links per page — flag pages with zero external links in long-form content (>500 words) that contains factual claims.


For full implementation details, code examples, and framework-specific guidance, see references/rule.md.

Rule page: https://frontendchecklist.io/rules/seo/external-links

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