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Incubator Q&A How should canonical URLs be used with comments?

A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be t...

posted 1y ago by Stephen Ostermiller‭  ·  edited 1y ago by Stephen Ostermiller‭

Answer
#5: Post edited by user avatar Stephen Ostermiller‭ · 2023-07-10T12:29:37Z (over 1 year ago)
clarity
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation, search engines will detect the duplicate content and choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation, search engines will detect the duplicate content and choose one one URL to index. They may or not make the correct choice to index the main URL for the page.[]()
#4: Post edited by user avatar Stephen Ostermiller‭ · 2023-07-07T19:10:02Z (over 1 year ago)
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation, search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation, search engines will detect the duplicate content and choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
#3: Post edited by user avatar Stephen Ostermiller‭ · 2023-07-07T19:08:35Z (over 1 year ago)
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation then search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation, search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
#2: Post edited by user avatar Stephen Ostermiller‭ · 2023-07-07T19:07:28Z (over 1 year ago)
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific content, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation then search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
  • A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page. The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.
  • For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.
  • Then you might choose a URL for a particular comment from among several possibilities:
  • - `https://example.com/my-page#comment3`
  • - `https://example.com/my-page-comment-3`
  • - `https://example.com/comment-3`
  • Regardless of which URL you choose to show a specific comment, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`
  • This is a case in which canonical links are needed rather than redirects. Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center. However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.
  • If you don't use canonical URLs in this situation then search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.
#1: Initial revision by user avatar Stephen Ostermiller‭ · 2023-07-07T19:06:53Z (over 1 year ago) 
A canonical URL should be the primary URL to represent ALL the content on the page. The URL that highlights a particular comment creates a variation of that page.  The comment URL should never be the canonical URL, rather it should refer to the main URL for the page as the canonical URL.

For example, if your page is `https://example.com/my-page`, it could have a self-referencing canonical URL `<link rel=canonical href=https://example.com/my-page>`.

Then you might choose a URL for a particular comment from among several possibilities:

 - `https://example.com/my-page#comment3`
 - `https://example.com/my-page-comment-3`
 - `https://example.com/comment-3`

Regardless of which URL you choose to show a specific content, the canonical URL should point back to the main URL for the page which includes the comment without highlighting it: `<link rel=canonical href=https://example.com/my-page>`

This is a case in which canonical links are needed rather than redirects.  Redirects change the URL for users which wouldn't be desirable. You want to let users see the highlighted comment front and center.  However search engines need to be told that the content on the page is duplicate and you would prefer that they index another variant.

If you don't use canonical URLs in this situation then search engines will detect the duplicate content choose some URL as the canonical on their own. They may or not make the right choice and index the main URL for the page.