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Use when auditing metadata, crawlability, structured data, or indexability related to Avoid redirect chains on canonical URLs. Verify the rendered HTML and HTTP response rather than relying only on source files.
Passed 21 of 22 test cases with the skill, and 19 of 22 without it.
3 fixed18 passed either way0 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
I noticed that several of our blog posts have canonical tags pointing to HTTP versions which then redirect to HTTPS. Please inspect our head tag rendering code, update the canonical link creation logic so it points straight to the final destination URL without hops, and explain the changes.
| Checked | Without skill | With skill |
|---|---|---|
| The response updates the canonical tag link output to use the secure HTTPS protocol directly. | Passed | Passed |
| The response explains that pointing canonical tags to redirecting URLs dilutes canonical signals and risks incorrect indexing by search crawlers. | Missed | Passed |
The instructions your model reads when the skill loads.
Canonical chains confuse search engines and can result in the wrong version of a page being indexed, while also adding unnecessary latency for crawlers.
rel="canonical" tag returns a 200 OK statusVerify that the canonical URL of the page does not result in any redirects.
Update the <link rel="canonical"> tag to point directly to the final, non-redirecting URL.
Explain why pointing a canonical tag to a redirecting URL weakens the canonical-url signal and impacts SEO.
Review metadata generation, rendered HTML, structured data, and response headers related to Avoid redirect chains on canonical URLs. 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/rules/seo/canonical-chain
test cases passed, vs 19 / 22 without
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