Hreflang Checker
Inspect HTML language alternates, self-reference, duplicate codes and return links.
1. Enter a URL or sample2. Run the check3. Review the results
How to use this tool
Enter your page information. Fetch mode checks public content using the AllgoTool server; paste mode processes the text without fetching that website. Review warnings before changing your website.
What this result means
Checks HTML head tags only; HTTP Link headers, XML sitemap annotations and JavaScript-generated markup are not inspected. Language/region checks validate structure and flag common mistakes, not every ISO code. Reciprocal checks are bounded and incomplete results are labelled. x-default is optional.