SEO
Hreflang Validator
Validate pasted hreflang HTML tags locally in your browser and check language codes, regional codes, x-default, duplicate values and URL issues.
Tool
Validate pasted hreflang HTML tags locally in your browser and check language codes, regional codes, x-default, duplicate values and URL issues.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Paste hreflang link tags to check language-region syntax, x-default usage, duplicate hreflang values, missing href attributes and common implementation mistakes. The validator works with pasted HTML and does not crawl alternate pages.
Examples
- <link rel="alternate" hreflang="en" href="https://example.com/en/">
- <link rel="alternate" hreflang="de-DE" href="https://example.com/de/">
- <link rel="alternate" hreflang="x-default" href="https://example.com/">
Frequently Asked Questions
Does this check reciprocal hreflang on other pages?
No. This browser-only validator checks the pasted tags only. It does not crawl alternate URLs.
Can it detect duplicate hreflang values?
Yes. It warns when the same hreflang value appears more than once in the pasted tag set.
Does it validate language and country codes?
Yes. It can check common language and region code patterns and warn about values that look invalid.