missing Hreflang Tags

For multi-lingual or multi-regional sites, hreflang tells Google which language/region version to show each user.

Why it matters

For multi-lingual or multi-regional sites, hreflang tells Google which language/region version to show each user. Missing hreflang causes wrong-language rankings and cannibalization.

Schedule a fix in your next sprint. Warnings won't block your site but they consistently leave performance on the table. Estimated SEO impact: medium — measurable effect on click-through or relevance.

How to fix

• Add <link rel="alternate" hreflang="en" href="..."> per language
• Include a self-referencing hreflang for every page
• Add an x-default pointing at the fallback version

Common causes

If the rule is firing across many pages, the root cause is almost always one of these:

• noindex applied broadly during a redesign and never removed for live pages.
• Robots.txt blocks a path that contains canonical pages along with the unwanted ones.
• CMS publishes a draft URL with a self-referential canonical pointing to a different slug.
• Tracking-parameter URLs proliferate and dilute crawl budget.

Anti-patterns to avoid

Even with the best intentions, these "fixes" make the issue worse — recognise them so you don't ship them:

• noindex applied to a directory that also holds canonical pages.
• Self-canonical pointing at a redirect chain.
• Robots.txt disallowing paths Google needs to render the page.

How atlookup detects this

Our crawler renders each page with a real headless browser, then reads robots directives, canonical tags, sitemap entries, and tests fetchability. Pages where the rule fires for missing hreflang tags are flagged on the report.

If you'd like to see this rule fire on your own site, run a free 60-second audit — every page is reported with the exact lines that triggered it.

Tools to verify the fix

Once you've applied the fix, double-check with these external validators:

• Google Search Console — URL Inspection shows exactly how Google treats the page.
• robots.txt Tester — Live test of disallow rules against your URLs.

Frequently asked questions

Related issues