Canonical & Hreflang SEO Auditor

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.

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

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

SEO Metadata Extractor - Full SEO Audit in One Call

santamaria-automations/seo-metadata-extractor

Extract SEO metadata from any website: title, meta description, Open Graph, Twitter Cards, Schema.org JSON-LD, canonical URLs, hreflang, and H1 structure. Export data, run via API, schedule and monitor runs, or integrate with other tools.

Extract SEO metadata, Open Graph, Twitter Cards, JSON-LD schema, canonical, hreflang and headings from any list of URLs. Fast HTTP-based crawler.

Canonical Tag Validator

zerobreak/canonical-tag-validator

Canonical tag validator that checks any webpage for missing, duplicate, or misconfigured canonical URLs — so SEO teams and developers can fix canonical issues before they damage search rankings.

Extract all SEO meta tags, Open Graph tags, Twitter cards, JSON-LD structured data, and more from any website. Process bulk URLs. Get competitive insights. Perfect for SEO agencies, developers, and content marketers.

Schema Markup Scraper & SEO Auditor

autofacts/metadata-scraper

Extract JSON-LD, Microdata, RDFa, Open Graph & Twitter Cards. Runs a 0-100 SEO audit — checks canonical, hreflang, headings, image alt, EEAT author signals. Detects 80+ schema.org types including LocalBusiness with NAP, geo coordinates, and Google Place IDs.

Canonical Consistency Audit

zerobreak/canonical-consistency-audit

A canonical consistency audit tool that crawls any list of URLs, inspects canonical tags, and flags missing, duplicate, or mismatched canonicals so SEO teams can fix indexation issues before they damage rankings.

Free SEO & metadata audit for any URL: title, meta description, OpenGraph, Twitter card, JSON-LD types, canonical, hreflang, viewport, robots, and link/image checks. No API key.