Build a valid hreflang cluster for any number of language + region combinations. ISO 639-1 language codes, ISO 3166-1 alpha-2 regions, automatic x-default, return-link validation, and both HTML <link> + XML sitemap output.
Your language + region variants
Language
Region (optional)
URL for this variant
x-default
Output
HTML <link> tags
XML Sitemap
HTTP Link: header
Hreflang rules we enforce for you
• Self-referencing tag. Every page must include itself in its hreflang set — we add it automatically.
• Return links. If page A lists page B, page B must list page A. Otherwise Google silently ignores both.
• Language-only vs language-region.en (language only) is valid; en-US targets US English. Region without language (-US alone) is invalid.
• x-default. Pick the fallback URL for users whose language/region doesn't match any variant. Google strongly prefers this.
• Duplicate locales. Two en-US URLs = Google throws out the whole cluster. We flag duplicates.
These tools are free and need no account.
They check one page at a time. RankCause itself does the thing they can’t:
it watches your pages over time and tests whether a change you made
actually moved a ranking.