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Free Hreflang Tag Generator (HTML & Sitemap) with Validation
List each language version and get a copy-paste, standards-compliant hreflang set — validated for the mistakes that silently break international SEO.
Why use this instead of doing it manually
Free hreflang generator: create correct reciprocal hreflang tags in HTML or XML-sitemap form with x-default and self-reference, plus instant validation for duplicate or invalid language codes.
| Capability | The manual way | With ContentSERP |
|---|---|---|
| Reciprocity | Manually mirror tags across every page | One set to paste on all versions |
| Common errors | Discover them in Search Console weeks later | Instant duplicate / invalid-code / missing-x-default checks |
| Formats | Only the <head> version | Both HTML link tags and sitemap xhtml:link |
| Cost | Paid hreflang plugins | Free, runs in your browser |
Frequently asked questions
What is x-default hreflang?
x-default is the fallback page for users whose language or region matches none of your versions — usually a language-picker or your primary locale. Google recommends including it, and this tool adds it automatically.
Do hreflang tags have to be reciprocal?
Yes. Every page in a set must list all the other versions, including itself. If A points to B but B does not point back, Google may ignore the hint. Paste the same generated block on every version.
Should I use HTML tags or the sitemap?
Either works. Sitemap-based hreflang scales better and avoids the reciprocity burden across many pages; HTML tags are simpler for a handful of pages. The generator outputs both formats.
Which codes does it validate?
It checks that language parts are valid ISO 639-1 codes, country parts are ISO 3166-1 alpha-2, that no hreflang is duplicated, that self-reference and x-default are present, and flags right-to-left languages so you can set dir="rtl".
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