#How do I add canonical url in metadata?

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arctic jewel
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How do I add canonical url in metadata?

onyx ravenBOT
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Hi @arctic jewel. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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In Next.js, you can add a canonical URL to your metadata using the alternates field in the metadata object. Here's an example of how you can do this:

export const metadata = {
 alternates: {
 canonical: '<https://nextjs.org',>
 },
}

This will generate the following <head> output:

<link rel="canonical" href="<https://nextjs.org"> />

This tells search engines that the preferred version of this page's content is found at the specified URL.

You can also use the metadataBase field to set a base URL prefix for metadata fields that require a fully qualified URL. This allows URL-based metadata fields defined in the current route segment and below to use a relative path instead of an otherwise required absolute URL. Here's an example:

export const metadata = {
 metadataBase: new URL('<https://acme.com'>),
 alternates: {
 canonical: '/',
 },
}

This will generate the following <head> output:

<link rel="canonical" href="<https://acme.com"> />

For more information, you can refer to the Next.js documentation on generating metadata (https://nextjs.org/docs/app/api-reference/functions/generate-metadata).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@arctic jewel kapa.ai is still learning and improving, please let us know how it did by reacting below

arctic jewel
#

@onyx raven How to pass the current url to canonical?

onyx ravenBOT
#

Let me check the knowledge base for you. One moment! :books:

#

To set the current URL as the canonical URL in Next.js, you can use the useRouter hook to access the current URL path. Then, you can append this path to your base URL in the metadata object. Here's an example:

import { useRouter } from 'next/router'

export default function Page() {
  const router = useRouter()

  const metadata = {
    metadataBase: new URL('<https://acme.com'>),
    alternates: {
      canonical: router.asPath,
    },
  }

  // ...
}

In this example, router.asPath gives you the current URL path, which is then used as the canonical path. This will generate a canonical link in the <head> of your HTML document with the current URL as the href.

Please note that this is a general approach and the exact implementation may vary based on your application's structure and requirements.

For more information, you can refer to the Next.js documentation on useRouter (https://nextjs.org/docs/api-reference/next/router#userouter) and generating metadata (https://nextjs.org/docs/app/api-reference/functions/generate-metadata).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@arctic jewel kapa.ai is still learning and improving, please let us know how it did by reacting below