SEO Components

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astro-i18n-next ships three optional Astro components that generate SEO-critical <head> tags for multilingual sites. Import only the ones you need.

Components

`HrefLangs`

Generates <link rel="alternate" hreflang="..." /> tags for every configured locale, plus an x-default entry pointing to the default locale version.

---
import HrefLangs from '@otrodigital/astro-i18n-next/HrefLangs.astro';
---

<head>
  <HrefLangs siteUrl="https://example.com" />
</head>

Output (for /about/ with en + es locales):

<link rel="alternate" hreflang="en" href="https://example.com/about/" />
<link rel="alternate" hreflang="es" href="https://example.com/es/sobre/" />
<link rel="alternate" hreflang="x-default" href="https://example.com/about/" />

`CanonicalURL`

Generates a <link rel="canonical" /> tag for the current page.

---
import CanonicalURL from '@otrodigital/astro-i18n-next/CanonicalURL.astro';
---

<head>
  <CanonicalURL siteUrl="https://example.com" />
</head>

Output (for /es/sobre/):

<link rel="canonical" href="https://example.com/es/sobre/" />

`OpenGraphLocale`

Generates <meta property="og:locale" /> for the current page locale and <meta property="og:locale:alternate" /> for each other locale. Locale values use the xx_YY format required by Open Graph (e.g. en_US, es_ES).

---
import OpenGraphLocale from '@otrodigital/astro-i18n-next/OpenGraphLocale.astro';
---

<head>
  <OpenGraphLocale siteUrl="https://example.com" />
</head>

Output (for /about/ with en as current locale):

<meta property="og:locale" content="en_US" />
<meta property="og:locale:alternate" content="es_ES" />

Full example

Use all three components together in your layout:

---
import HrefLangs from '@otrodigital/astro-i18n-next/HrefLangs.astro';
import CanonicalURL from '@otrodigital/astro-i18n-next/CanonicalURL.astro';
import OpenGraphLocale from '@otrodigital/astro-i18n-next/OpenGraphLocale.astro';

const siteUrl = 'https://example.com';
---

<html>
  <head>
    <CanonicalURL siteUrl={siteUrl} />
    <HrefLangs siteUrl={siteUrl} />
    <OpenGraphLocale siteUrl={siteUrl} />
  </head>
  <body>
    <slot />
  </body>
</html>

Props

All three components accept a single required prop:

Prop	Type	Description
`siteUrl`	`string`	Your site’s base URL without a trailing slash (e.g. `"https://example.com"`)

The components automatically detect the current path from Astro.url.pathname and use the route helpers from virtual:i18n to generate correct alternate URLs with translated slugs.