Hreflang for multilingual websites: here’s how to do it.

If your website operates in multiple languages or targets multiple countries, hreflang helps search engines understand which version corresponds to which visitor. Without these signals, Google may display the wrong language variant or cause your own pages to compete with each other.

In practice, hreflang is therefore not just about SEO, but also about structure, technology, and content management. Especially with WordPress, WooCommerce, or custom-built websites, you quickly see that a small error in implementation can have a major impact on discoverability and user experience.

What exactly does hreflang do?

Hreflang is a technical tag that allows you to specify which page is intended for which language or region. Think of a Dutch version, a Belgian Dutch version, and an English version of the same content. Search engines use this information to match the correct page with the user’s search intent and language settings.

It is important to note that hreflang is not a ranking factor in and of itself, but rather a signal for variant management. It primarily helps you distribute traffic more effectively across the appropriate pages and limit duplicate content issues between language variants.

When do you need hreflang?

You need hreflang as soon as you have multiple versions of the same content for different languages or regions. This applies, for example, to a .nl site with an .en version, but also to an international webshop with separate pages for each country. It can also be useful within a single language, such as Dutch for the Netherlands and Dutch for Belgium.

Not every multilingual setup requires the same approach. A simple translation of your homepage requires a different approach than an online store with hundreds of product pages, filters, and country-specific prices. It is precisely here that you see how a solid technical foundation makes the difference between scalable SEO and maintenance issues.

Which hreflang values do you use?

You implement hreflang using language codes and sometimes country codes as well. For example, a general English page gets `en`, while `en-gb` is specific to the United Kingdom and `en-us` to the United States. For Dutch, you usually use `nl`, unless you really want to distinguish a country-specific variant, such as `nl-nl` and `nl-be`.

The choice must align with your site structure and content strategy. If you use the same language in Belgium but display different prices, shipping information, or legal pages, a country code is usually more logical than just a language code.

How do you implement hreflang technically?

You can implement hreflang in three ways: in the HTML head, in the HTTP header, or in an XML sitemap. For most websites, a sitemap solution is the most manageable, especially if you have many pages or if development and content management are separate.

The most important rule is that the links must be reciprocal. If page A links to page B, then page B must also link back to page A and all other variants within the same set. If that backlink is missing, Google often ignores the signals partially or entirely.

In practical terms, these are the basic requirements:

• Each language or regional variant links to all alternatives, including itself.
• The canonical tag points to the correct, original version of the page.
• URLs are indexable and do not result in a redirect or error message.
• The language and country codes are exactly in accordance with ISO standards.

Common mistakes with hreflang

A common mistake is that teams only include the most important pages and forget the rest. This results in an incomplete set, preventing search engines from properly tracking the relationship between variants. You also often see that canonicals and hreflang work against each other, for example, when all variants point to a single canonical page.

Another common mistake is the use of incorrect codes or inconsistent URLs. A typo in `hreflang="nl-be"` or a page accessible via multiple routes can quickly cause confusion. For larger websites, it pays to automate this process technically and monitor it with crawls and sitemap validation.

Hreflang and canonical: how do they relate?

Hreflang and canonical solve different problems, but they must work together correctly. The canonical tag tells search engines which version is preferred within a set of similar pages. Hreflang then specifies which other language or regional variants are associated with it.

The rule of thumb is simple: each language variant usually canonicalizes to itself, not to another language. If you canonicalize an English page to the Dutch version, you undermine the international logic. For multilingual web shops and content platforms, this is one of the most important technical checks.

How do you check if hreflang is set up correctly?

Verification starts with your source data. You want to know if all variants are present, if the URLs are indexable, and if the links are bidirectional. Then, you check in a crawler or in Search Console to see if the signals are consistent with your sitemap and HTML output.

A thorough check doesn’t have to be complicated, but it does need to be systematic. For larger sites, a random sample is often insufficient, as an error in a template can affect hundreds of pages at once. That’s why a combination of development checks, SEO audits, and logging works best.

How do you approach hreflang effectively as your business grows?

As your site grows internationally, hreflang must be able to scale with it. Therefore, don’t start with isolated manual tags on a few pages, but with a structure you can replicate in templates, custom fields, or a sitemap generator. This prevents maintenance issues as soon as you add new countries, languages, or product categories.

For teams working on both content and technology, coordination is crucial. Especially with WordPress or WooCommerce, you see that the SEO setup, translation workflow, and development must all align simultaneously. That’s often where the real benefit lies: not just setting the tags correctly, but structuring the entire publication process so that errors don’t keep recurring.

What does this mean for your international site?

Hreflang isn’t just a quick SEO fix, but a component of your international information architecture. If the foundation is solid, you help both search engines and users find the right version of your content faster. If the foundation is shaky, it costs you visibility, click-through rates, and often a lot of internal time as well.

So approach your multilingual site systematically, with an eye for SEO, development, and content management all at once. That’s precisely where the quality lies that you’ll see reflected in your results later on.

Frequently Asked Questions About hreflang for Multilingual Websites

If you’re working on an international website, it pays to consider hreflang alongside SEO and development. At Digital Wizards, we often do this as part of a broader technical SEO approach, ensuring the structure remains reliable at scale.