Free Hreflang Checker: Find and Fix International SEO Errors
Enter your URL and get a full hreflang audit in seconds. Spot missing return tags, invalid language codes, and conflicts, with clear fixes for each issue.
Catch Broken Return Tags
See which pages point to alternates that do not link back, the most common cause of ignored hreflang annotations.
Validate Language and Region Codes
Every tag is checked against valid ISO language and country codes, so typos like en-UK get flagged instantly.
Clear Fixes, Not Jargon
Each finding comes with a plain-language recommendation, so you know exactly what to change and where to change it.
A hreflang checker inspects the hreflang annotations on your page to confirm they correctly map each language and regional version of your content. Hreflang tells search engines which URL to show users in a given language or country, and small mistakes break it. This free tool reads your tags, validates the language and region codes, and flags errors that could misdirect international visitors.
What the hreflang checker validates
The checker reads the hreflang annotations on your page, whether placed in the HTML head, HTTP headers, or a sitemap, and validates each entry. It checks that language and country codes follow the correct ISO format, that URLs are absolute, and that a self-referencing hreflang is present. It looks for the return-link requirement, where every page in a set must reference the others reciprocally, and flags missing or one-way links that invalidate the cluster. It also catches a missing x-default and duplicate or conflicting entries. The result shows which annotations are valid and which are broken, so you can see exactly where your international targeting falls apart.
How to read results and fix hreflang errors
Start with invalid codes, correcting any language or region value that does not match the accepted format, since a typo like en-UK instead of en-GB silently fails. Add self-referencing tags where they are missing and make every URL absolute. Fix return-link gaps by ensuring each alternate page points back to all the others in the group, including itself. Set an x-default for users whose language you do not specifically target. Keep the annotations identical in structure across every page in the set. Recheck after editing so you can confirm the cluster now validates cleanly and search engines can trust your language and region signals.
Why hreflang matters for international SEO
Hreflang is how multilingual and multi-regional sites make sure the right audience lands on the right page instead of a version in the wrong language or currency. When it is broken, search engines ignore the annotations and may show the wrong URL, hurting engagement and conversions abroad. Correct hreflang also prevents your translated pages from being read as duplicate content competing against each other. For any business serving multiple countries or languages, valid tags directly shape the international experience and the visibility of each localized page, making regular validation an essential part of global SEO.
Frequently Asked Questions
What does the Hreflang Checker actually test?
It fetches your URL, reads hreflang annotations in the HTML head, and checks for missing return tags, invalid language or region codes, missing x-default, and self-reference errors, then lists recommendations for each problem it finds.
Why do hreflang return tags matter so much?
Google treats hreflang as a two-way agreement. If page A links to page B but B does not link back, the pair is ignored and the wrong language version can rank. Return tag errors are the most common hreflang issue and the checker flags every one.
Is the Hreflang Checker free to use?
Yes. Create a free Brainito account and you can run unlimited hreflang checks, along with the rest of the Brainito SEO toolkit. No credit card is needed, and results appear in seconds so you can retest right after you ship a fix.
Find and fix your hreflang errors before Google ignores them
One account unlocks hreflang checker plus 340+ marketing tools, weekly audits, and your action plan.
More On-Page SEO tools
Browse all 340+ toolsAI Crawler Access Checker
Check whether AI crawlers like GPTBot and ClaudeBot can access your site and see what gets blocked
AI Crawler Access Generator
Generate robots rules that welcome or block AI crawlers so you control how bots use your content
Broken Links Checker
Find dead links across your site before visitors and search engines run into 404 pages
Canonical Tags Checker
Check canonical tags across your pages to catch duplicate content signals confusing Google
Canonical Tags Generator
Generate correct canonical tags that point search engines at your preferred version of each page
Crawl errors Checker
Scan your site for crawl errors that keep search engines from reaching and indexing your pages