Tools / Canonical Checker
规范检查器
检查页面声明的 canonical URL。解析源 HTML 中的相对值并发现冲突的声明。
Your canonical report
Check a URL to see declarations, original values, and resolved destinations here.
URL 的作用是什么 更喜欢这个页面？
canonical 注释表示重复或相似内容的首选 URL。此检查器从一页的 HTML 中提取链接元素，并在其解析的目标旁边显示原始 href。
该报告是来源检查，而不是可索引性判定。它不会验证有效头、HTTP 链接头、JavaScript 更改或 Google 选择的 canonical 内的放置。
Resolve the value, then review the intent
1. Inspect the page. Enter its public URL. If fetching is refused, paste the page source and supply the URL it came from. The URL check resolves relative values against the final fetched URL.
2. Compare declarations. Read the original href and resolved destination together. A different destination may be intentional for duplicate content; a matching destination is self-referencing. Neither result proves what is indexed.
3. Fix and recheck. Choose the intended representative page, keep one canonical annotation in a valid HTML head, and check the published source again. Inspect the destination separately before relying on it.
A relative path can be valid and still be worth replacing
On https://example.com/shop/item?ref=email, the value /shop/item resolves to https://example.com/shop/item. If that is the intended preferred page, publish the absolute value:
<link rel="canonical" href="https://example.com/shop/item">
A base href can change how a relative path resolves. Review the resolution base in the report before changing the tag.
Keep declarations separate from search-engine decisions
A declaration expresses a preference. A redirect changes where a request ends. Google’s indexed choice requires separate evidence from Search Console. Read Google’s canonical guidance before changing your implementation.
Once the declaration is clear, use the Title & Meta Checker to review the page’s search presentation, or explore SEO Site Audit for the broader workflow.