Tell Google about localized versions of your page

If you have multiple versions of a page for different languages or regions, tell Google about these different variations. Doing so will help Google Search point users to the most appropriate version of your page by language or region.

Note that even without taking action, Google might still find alternate language versions of your page, but it is usually best for you to explicitly indicate your language- or region-specific pages.

Some example scenarios where indicating alternate pages is recommended:

• If you keep the main content in a single language and translate only the template, such as the navigation and footer. Pages that feature user-generated content, like forums, typically do this.
• If your content has small regional variations with similar content, in a single language. For example, you might have English-language content targeted to the US, GB, and Ireland.
• If your site content is fully translated into multiple languages. For example, you have both German and English versions of each page.

Localized versions of a page are only considered duplicates if the main content of the page remains untranslated.

Methods for indicating your alternate pages

There are three ways to indicate multiple language/locale versions of a page to Google:

• HTML
• HTTP Headers
• Sitemap

The three methods are equivalent from Google's perspective and you can choose the method that's the most convenient for your site. While you can use all three methods at the same time, there's no benefit in Search (in fact, it maybe be much harder to manage three implementations instead of just picking one).

Use hreflang to tell Google about the variations of your content, so that we can understand that these pages are localized variations of the same content. Google doesn't use hreflang or the HTML lang attribute to detect the language of a page; instead, we use algorithms to determine the language.

Guidelines for all methods

• Each language version must list itself as well as all other language versions.
• Alternate URLs must be fully-qualified, including the transport method (http/https), so:
  https://example.com/foo, not //example.com/foo or /foo
• Alternate URLs do not need to be in the same domain.
• If you have several alternate URLs targeted at users with the same language but in different locales, it's a good idea to also provide a catchall URL for geographically unspecified users of that language. For example, if you have specific URLs for English speakers in Ireland (en-ie), Canada (en-ca), and Australia (en-au), provide a generic English (en) page for searchers in the US, UK, and all other English-speaking locations. It can be one of the specific pages, if you choose.
• If two pages don't both point to each other, the tags will be ignored. This is so that someone on another site can't arbitrarily create a tag naming itself as an alternative version of one of your pages.
• If it becomes difficult to maintain a complete set of bidirectional links for every language, you can omit some languages on some pages; Google will still process the ones that point to each other. However, it is important to link newly expanded language pages bidirectionally to the originating/dominant language(s). For example, if your site was originally created in French with URLs on .fr, it's more important to bidirectionally link newer Mexican (.mx) and Spanish (.es) pages to your strong .fr presence, rather than to bidirectionally link your new Spanish language variant pages (.mx and .es) to each other.
• Consider adding a fallback page for unmatched languages, especially on language/country selectors or auto-redirecting home pages. Use the the x-default value:
  <link rel="alternate" href="https://example.com/" hreflang="x-default" />

HTML tags

Add <link rel="alternate" hreflang="lang_code"... > elements to your page header to tell Google all of the language and region variants of a page. This is useful if you don't have a sitemap or the ability to specify HTTP response headers for your site.

For each variation of the page, include a set of <link> elements in the <head> element, one link for each page variant including itself. The set of links is identical for every version of the page. See the additional guidelines.

Here is the syntax of each link element:

<link rel="alternate" hreflang="lang_code" href="url_of_page" />

The <link> tags must be inside a well-formed <head> section of the HTML. If in doubt, paste code from your rendered page into an HTML validator to ensure that the links are inside the <head> element. Additionally, don't combine link tags for alternate representations of the document; for example don't combine hreflang annotations with other attributes such as media in a single <link> tag.

Example

Example Widgets, Inc has a website that serves users in the USA, UK, and Germany. The following URLs contain substantially the same content, but with regional variations:

Note that the language-specific subdomains in these URLs (en, en-gb, en-us, de) are not used by Google to determine the target audience for the page; you must explicitly map the target audience.

Here is the HTML that would be in the <head> section of all the pages listed in the URLs with regional variations table. It would direct US, UK, generic English speakers, and German speakers to localized pages, and all others to a generic home page. Google Search returns the appropriate result for the user, according to their browser settings.

<head>
 <title>Widgets, Inc</title>
  <link rel="alternate" hreflang="en-gb"
       href="https://en-gb.example.com/page.html" />
  <link rel="alternate" hreflang="en-us"
       href="https://en-us.example.com/page.html" />
  <link rel="alternate" hreflang="en"
       href="https://en.example.com/page.html" />
  <link rel="alternate" hreflang="de"
       href="https://de.example.com/page.html" />
 <link rel="alternate" hreflang="x-default"
       href="https://www.example.com/" />
</head>

HTTP Headers

You can return an HTTP header with your page's GET response to tell Google about all of the language and region variants of a page. This is useful for non-HTML files (like PDFs).

Here is the format of the header:

Link: <url1>; rel="alternate"; hreflang="lang_code_1", <url2>; rel="alternate"; hreflang="lang_code_2", ...

You must specify a set of <url>, rel="alternate", and hreflang values for every version of the page including the requested version, separated by a comma as shown in the following example. The Link: header returned for every version of a page is identical. See the additional guidelines.

Example

Here is an example Link: header returned by a site that has three versions of a PDF file: one for English speakers, one for German speakers from Switzerland, and one for all other German speakers:

Link: <https://example.com/file.pdf>; rel="alternate"; hreflang="en",
      <https://de-ch.example.com/file.pdf>; rel="alternate"; hreflang="de-ch",
      <https://de.example.com/file.pdf>; rel="alternate"; hreflang="de"

Sitemap

You can use an XML sitemap to tell Google all of the language and region variants for each URL. To do so, add a <loc> element specifying a single URL, with child <xhtml:link> entries listing every language/locale variant of the page including itself. Therefore if you have 3 versions of a page, your sitemap will have entries for the URLs of each version, and each entry will have 3 identical child entries.

Sitemap rules:

• Specify the xhtml namespace as follows:

  xmlns:xhtml="http://www.w3.org/1999/xhtml"

• Create a separate <url> element for each URL as you would with any other sitemap.
• Each <url> element must include a <loc> child indicating the page URL.
• Each <url> element must have a child element <xhtml:link rel="alternate" hreflang="supported_language-code"> that lists every alternate version of the page, including itself. The order of these child <xhtml:link> elements doesn't matter, though you might want to keep them in the same order to make them easier for you to check for mistakes. Child elements don't count towards the URL limit for sitemaps.
• Upload the sitemap to a directory on your site that the sitemap is applicable to. Keep in mind that a sitemap can only contain descendant URLs of the directory where the sitemap is hosted from.
• Our documentation on sitemaps also applies to the sitemap extensions. Make sure to follow general sitemap guidelines.
• See the additional guidelines.

Example

Here is an English language page targeted at English speakers worldwide, with equivalent versions of this page targeted at German speakers worldwide and German speakers located in Switzerland. Here are all the URLs present on your site:

• www.example.com/english/page.html targeted at English speakers.
• www.example.de/deutsch/page.html targeted at German speakers.
• www.example.de/schweiz-deutsch/page.html targeted at German speakers in Switzerland.

Here is the sitemap for those three pages:

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
  xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <url>
    <loc>https://www.example.com/english/page.html</loc>
    <xhtml:link
               rel="alternate"
               hreflang="de"
               href="https://www.example.de/deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="de-ch"
               href="https://www.example.de/schweiz-deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="en"
               href="https://www.example.com/english/page.html"/>
  </url>
  <url>
    <loc>https://www.example.de/deutsch/page.html</loc>
    <xhtml:link
               rel="alternate"
               hreflang="de"
               href="https://www.example.de/deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="de-ch"
               href="https://www.example.de/schweiz-deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="en"
               href="https://www.example.com/english/page.html"/>
  </url>
  <url>
    <loc>https://www.example.de/schweiz-deutsch/page.html</loc>
    <xhtml:link
               rel="alternate"
               hreflang="de"
               href="https://www.example.de/deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="de-ch"
               href="https://www.example.de/schweiz-deutsch/page.html"/>
    <xhtml:link
               rel="alternate"
               hreflang="en"
               href="https://www.example.com/english/page.html"/>
  </url>
</urlset>

Supported language and region codes

The hreflang attribute's value is comprised of one or optionally two values, separated by a dash. For example, en-US. The first code of the hreflang attribute is the language code (in ISO 639-1 format) followed by an optional second code that represents the region code (in ISO 3166-1 Alpha 2 format) of an alternate URL.

To target different language speakers in Belgium, you might use the following language and region codes:

• Good (German for users in Belgium): de-be
• Good (Dutch for users in Belgium): nl-be
• Good (French for users in Belgium): fr-be
• Bad because the first code is for language (be is the Belarusian language code): be

To simplify your labeling, you can specify a language code by itself. For example:

• de: German language content, independent of region
• en-GB: English language content, for users in the UK
• de-ES: German language content, for users in Spain

For language script variations, the proper script is derived from the country. For example, when using zh-TW for users in Taiwan, the language script is automatically derived (in this example: Chinese-Traditional). You can also specify the script itself explicitly using ISO 15924, like this:

• zh-Hant: Chinese (Traditional)
• zh-Hans: Chinese (Simplified)

Like with other language codes, you can also specify an optional region. For example, use zh-Hans-US to specify Chinese (Simplified) for users in the United States.

Use the x-default value for unmatched languages

The reserved x-default value is used when no other language/region matches the user's browser setting. This value is recommended for specifying the fallback page for users whose language settings don't match any of your site's localized versions. While you can use the x-default value for any page, it was designed for language selector pages and so it will work best with those.

There's no need to specify a language code for the x-default value; the page is targeted to users whose language settings are unmatched on your site, thus the language of the page is irrelevant.

To implement the hreflang="x-default" annotation, add an additional link tag to the existing hreflang annotations, and set the href attribute to the URL where you want your users to land if your site doesn't support their language. For example, an HTML implementation may look like this:

<link rel="alternate" href="https://example.com/en-gb" hreflang="en-gb" />
<link rel="alternate" href="https://example.com/en-us" hreflang="en-us" />
<link rel="alternate" href="https://example.com/en-au" hreflang="en-au" />
<link rel="alternate" href="https://example.com/country-selector" hreflang="x-default" />

Troubleshooting

Common Mistakes

Here are the most common mistakes with hreflang usage:

• Missing return links: If page X links to page Y, page Y must link back to page X. If this is not the case for all pages that use hreflang annotations, those annotations may be ignored or not interpreted correctly. For example, considering this link on https://de.example.com/index.html:

  <link rel="alternate" hreflang="en-gb" href="https://en-gb.example.com/index.html" />

  You must also have a hreflang link on https://en-gb.example.com/index.html that points back to the de version of the content:

  <link rel="alternate" hreflang="de" href="https://de.example.com/index.html" />

• Incorrect language codes: Make sure that all language codes you use identify the language (in ISO 639-1 format) and optionally the region (in ISO 3166-1 Alpha 2 format) of an alternate URL. Specifying the region alone is not valid.
• Incorrect region codes: Make sure you're using officially assigned code elements for the regions you're trying to identify (in ISO 3166-1 Alpha 2 format). If you use codes that are listed as reserved for something else, Google Search ignores that part of the annotation (for example, using EU, UN, or UK in hreflang annotations doesn't have an effect on Google Search).

Debugging hreflang errors

There are many third-party tools available that you can use to debug hreflang annotations. Here are a few popular tools. These tools are not maintained or checked by Google.

• Aleyda Solis's hreflang tags generator tool for generating or modifying hreflang tags.
• Merkle SEO hreflang tag testing tool for validating hreflang tags on a single live page.