What is a hreflang return link?

When page A lists page B as an alternate, page B must list page A back. Google ignores pairs that do not link to each other, the most common hreflang error.

Which codes does hreflang use?

An ISO 639-1 language code, optionally followed by an ISO 3166-1 region code, such as en, en-GB or es-MX. x-default marks the page for visitors whose language matches none of the others.

Does it check hreflang in XML sitemaps?

No. It reads the hreflang annotations on the page, then fetches each language version they list.

How much does the Hreflang Checker cost?

10 credits per run, shown before the run starts. An AI agent can run the same tool over the REST API or MCP with a workspace API key.

Pricing

SEO · International SEO · 10 credits

Hreflang Tag Checker & Validator

Find the invalid codes, missing return links, noindex and canonical conflicts that make Google ignore your language versions.

Hreflang Checker 1.0.0 · price a32-v1 · retrieved at run time · Run it from an AI agent

What the Hreflang Checker checks

Validate a page’s hreflang codes, self-reference and x-default, then fetch each language version to confirm it loads, is indexable and links back.

Language and region codes
Self-reference and x-default
Whether each language version loads and is indexable
Return links from each language version
noindex and canonical conflicts

What it does not do

hreflang in XML sitemaps
Crawling every page of the site
Choosing which markets to target

Questions about the Hreflang Checker

What is a hreflang return link?: When page A lists page B as an alternate, page B must list page A back. Google ignores pairs that do not link to each other, the most common hreflang error.
Which codes does hreflang use?: An ISO 639-1 language code, optionally followed by an ISO 3166-1 region code, such as en, en-GB or es-MX. x-default marks the page for visitors whose language matches none of the others.
Does it check hreflang in XML sitemaps?: No. It reads the hreflang annotations on the page, then fetches each language version they list.
How much does the Hreflang Checker cost?: 10 credits per run, shown before the run starts. An AI agent can run the same tool over the REST API or MCP with a workspace API key.