Hreflang Validator

Hreflang Tag Checker API | SEO Validator

andok/hreflang-checker

Bulk validate website hreflang tags for international SEO. Audit multi-language sites for missing x-default tags, bidirectional errors, and ISO code compliance.

Canonical & Hreflang SEO Auditor

glowing_glove/canonical-hreflang-auditor

Audit canonical URLs, hreflang annotations, duplicate language targets, and international SEO signals.

Validate hreflang implementation (<link rel="alternate" hreflang=...>) to prevent international SEO issues. Detects missing/duplicate hreflangs, invalid language-region codes, missing self reference, and optional reciprocal hreflang checks.

Extract and validate hreflang tags from web pages for international SEO audits and monitoring.

Hreflang Tags Extractor

benthepythondev/hreflang-tags-extractor

Extract hreflang alternate tags from international SEO pages.

Hreflang Cluster Auditor

junipr/hreflang-cluster-auditor

Audit hreflang clusters, language and region codes, reciprocal return links, x-default coverage, and canonical conflicts.

Validate hreflang annotations after a domain or site migration: locale syntax, duplicates, target health, canonicals, x-default, self-references, reciprocal return links, and old-domain references.

Audit a public page's hreflang alternate tags in one API call. Reports x-default, duplicate and invalid values, self-reference, score, and recommendations for international SEO QA.

Hreflang Checker

gifted_wagon/hreflang-reciprocity-auditor

Audit hreflang syntax, duplicates, canonical alignment, self-reference, x-default, and bounded reciprocal links with evidence.

Analyze public pages for hreflang, x-default, HTML language, canonical alignment, language switcher links, locale matrix evidence, and international SEO risks.