Why your hreflang tags are being ignored
Originally published on the WeLocale blog . Most SEO work is a matter of degree. You improve a title, you gain a little. hreflang is not like that. It either forms a valid set that search engines act on, or it does nothing at all, and the failure is completely silent. No warning, no penalty, no message in Search Console telling you the tags you carefully added are being discarded. We build a…
Hreflang tags are crucial for SEO when translating a website into multiple languages. However, these tags can often be ignored by search engines, resulting in poor or no translation performance. The WeLocale blog explains why this happens and provides tips on how to ensure your hreflang tags work effectively.
Hreflang tags are not individual page properties but rather a set of pages. Each page must agree with the others in the set. If one page mentions another language without listing itself, the set is considered incomplete and will be ignored by search engines. A common mistake is using the incorrect language or region codes; for example, the United Kingdom should be labeled with "GB" in the hreflang tag, not "UK."
Another reason hreflang tags may fail is due to URL structure. Tags should point to the final URL, not a redirect or a page with a trailing slash added or removed. Moreover, any URL that is blocked by robots.txt, marked as noindex, or canonicalized elsewhere cannot be an hreflang target. Conflicting signals can arise when a page is declared as an alternate by both HTML link tags and HTTP headers or an XML sitemap.
Mixing declaration methods can also create conflicting signals, so it's essential to use only one method for a given page.
Server-rendered tags are generally stronger than runtime-generated tags, as they are picked up during the initial crawl. However, server-rendered tags are not always guaranteed, especially when using client-side injection. Google can render JavaScript, but other search engines may not run JavaScript at all, making server-rendered tags more reliable.
The blog also discusses the use of the x-default parameter, which allows search engines to serve a default page when the visitor's language is not supported. This is particularly useful for multilingual websites where each language should have its own indexable URL. The blog provides a free hreflang generator and validator to help generate and check the syntax of hreflang tags, ensuring they are free of common errors such as en-UK, case errors, and relative URLs.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
