SEO Audit: Meta Tags, Open Graph & JSON-LD Checker

Meta & Open Graph Tag Extractor — Bulk

hipersoft/meta-og-extractor

Extract title, meta description, canonical, robots, Open Graph and Twitter Card tags from a list of URLs, with missing-tag flags. For SEO and link-preview audits.

On-page SEO audit for any URL: title, meta description, H1-H3 map, canonical, robots, Open Graph / Twitter cards, schema.org presence, image alt-text coverage, and an overall score. Clean JSON, no crawl stack.

On-page SEO audit and technical SEO audit at scale: meta robots, canonical tag, hreflang, XML sitemap, redirect chain, heading hierarchy, image alt and page speed. 0-100 score, severity-ranked issues, 235-signature tech detection. Pure HTTP, no browser.

Audit a public page's SEO and social metadata in one API call. Checks title, meta description, canonical, robots, Open Graph, Twitter Card, hreflang, viewport, and JSON-LD.

SEO Meta Tag Analyzer

constant_quadruped/seo-meta-analyzer

Audit any URL for SEO: title length, meta description, Open Graph tags, heading hierarchy, image alt texts, keyword density, mobile viewport, canonical URL, schema markup, and more.

Extract the exact sitemap file you name, or discover a domain's sitemaps. Deduplicated URL, lastmod and source rows with explicit partial/error reports. No page crawl or proxy; empty runs are free.

Deterministic local indexability + canonical audit of explicit public HTTP(S) URLs from static HTML: robots.txt enforcement, meta/X-Robots-Tag noindex, HTTP status, redirect chains, and declared canonical analysis.

Broken Link & SEO Redirect Audit

longish_whistle/broken-link-seo-redirect-audit

Check URL lists for 404s, redirect chains, noindex directives and canonical tags. Get a repair checklist with evidence, plus optional before/after comparisons. JSON and CSV.

Schema.org JSON-LD Generator

automation-lab/schema-org-json-ld-generator

Generate normalized Schema.org JSON-LD for business, product, article, event, FAQ, breadcrumb, organization, and webpage details, with validation warnings.

SEO Audit & Broken Link Checker: Full Site Crawl

digital_influx/seo-audit

Crawl any website and get one row per page with its SEO issues: titles, meta descriptions, H1, noindex, canonical, hreflang, structured data, missing alt, broken links, redirects, duplicates and orphan pages. Monitor new and fixed issues. Respects robots.txt.