1.8 URL structure & internationalisationHighVerified
hreflang missing on multilingual site
On a site with multiple language or regional versions, hreflang tells Google which version to show which user. Without it, the wrong version can rank in the wrong market, or versions can be treated as duplicates.
What it is
No localisation signals between language versions.
Why it matters
Google may serve the wrong language/region version, harming UX and performance in each market.
How to fix it
Implement reciprocal hreflang across versions.
How to find it on your site
- Identify all language and regional versions of your pages.
- Check whether each carries hreflang annotations to its counterparts.
- Add a complete set of hreflang tags across the versions.
- Validate with an hreflang testing tool.
Cross-reference to ranking and citation factors
hreflang does not boost ranking, but it routes the right version to the right user and prevents localisation duplicates, which protects performance per market.
Impact
Medium-high for international. Direct.
Evidence
Use hreflang to signal localized versions. Google Search Central, Tell Google about localized versions (hreflang)
Sources