Catch SEO disasters before Google does: watches robots.txt, XML sitemaps and key pages for Disallow: /, noindex, canonical and status changes, sitemap URL drops and errors. Diffs vs last run, Slack/webhook alerts, HTML report.

Lighthouse Batch Audits & Regression Alerts

peerless_columbine/lighthouse-batch-audit-monitor

Audit public pages with Lighthouse13.5.0, export raw and HTML reports, and compare persistent category baselines.

Automated site quality and E-E-A-T audit crawler. Crawls pages to analyze author signals, JSON-LD Schema markup, sitewide trust links, and content depth—generating an instant compliance score and prioritized fix list to protect rankings against Google core updates.

Free beta: compare permitted public product pages with supplied SKU, price, currency and availability. Static JSON-LD only; ambiguous evidence stays inconclusive.

Bulk Redirect Checker: 301 Chains, Loops & Redirect Maps

quanta1810/bulk-redirect-checker

Bulk redirect checker: every hop of each URL's 301/302 redirect chain, final URL and status code, redirect loops, meta refresh, HTTPS downgrade, and old -> new redirect map validation for site migrations. $0.50 per 1,000 URLs, no start fee; unreachable or blocked URLs are free. API, MCP, n8n.

Audits web pages for missing title/meta tags, H1 structure, canonical URLs, JSON-LD structured data, image alt attributes, and response speed.

SEO Health Check (titles, descriptions, sitemap, noindex)

nitsuahlabs/seo-health-check

Crawl a site and list every page with SEO problems: missing or duplicate titles and descriptions, noindex, missing canonicals, plus robots.txt and sitemap checks.

Audit hundreds of URLs, or a whole site from its sitemap, with Google PageSpeed Insights: Lighthouse scores, lab Core Web Vitals, real-user CrUX field data with pass/fail, and the top fixes per page. Mobile and desktop. Uses your own free Google API key. No start fee.

Redirect Checker & Bulk URL Status: Chains, Loops, 301 Map QA

cygnix_labs/redirect-checker

Bulk redirect checker and HTTP status code checker. Traces every hop (301/302/307/308, meta refresh) and flags redirect chains, loops, 404s, soft 404s, noindex targets and redirect-map mismatches after a site migration. First 20 URLs free, then $0.0008/URL.

Ranked Keywords & Domain Overview API

touchrock/ranked-keywords

See the Google keywords a domain, subdomain or page ranks for: position, URL, search volume, CPC, keyword difficulty and estimated traffic, plus a domain overview, in 94 countries. $1.50 per 1,000 keywords + $0.02 per domain; no data, no charge.