339 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Sitemap reader: every URL a website publishes, from robots.txt and its sitemaps, with last-modified dates. Every URL a website publishes, from its own sitemaps: pass ?url= and we read robots.txt for Sitemap: lines (else...
Linkheft: Domain rank and authority lookups, up to 50 domains a call.
ABC classification by cumulative annual value with policy recommendations
Ad campaign forecast with ROAS, CAC, profit, break-even and budget scaling
Email campaign opens, clicks, orders, revenue per email, ROI and annual list value
Compare job offers by total compensation, cost of living, hourly rate and weighted score
Erlang C wait probability, service level and the agents needed for a call center or queue
DPMO, sigma level, Cp, Cpk, expected ppm out of spec and rolled throughput yield
EOQ with total cost, orders per year, sensitivity and quantity-discount comparison
Reorder point, safety stock, service-level trade-off, fill rate and carrying cost
Organic clicks and value by ranking position with the traffic gain from moving up
Social preview and SEO meta checker - Open Graph, Twitter Card, image check, per-platform previews and a graded checklist
Basic HTML lint (no external validator): unclosed or mismatched tags, missing doctype, lang, title, meta charset and viewport, images without alt, links without href or text, duplicate ids, inline event handlers, depreca...
Sitemap validator: fetches a sitemap or index, checks well-formedness, namespace, type (urlset/sitemapindex), counts entries, validates loc URLs (absolute, same host, no duplicates), lastmod formats, changefreq/priority...
SEO audit of a web page with a 0-100 score and a ranked issues list: title and meta description length, H1 and heading structure, canonical tag, noindex, Open Graph and Twitter cards, image alt text, internal and externa...
Does a website use Yoast SEO? Fetches the page (homepage for a bare domain) and matches Yoast SEO's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (seo). Techno...
Does a website use Rank Math? Fetches the page (homepage for a bare domain) and matches Rank Math's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (seo). Techno...
Does a website use All in One SEO? Fetches the page (homepage for a bare domain) and matches All in One SEO's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (se...
Change watch for does site use yoast: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed wit...
Change watch for does site use rank math: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed...
Change watch for does site use aioseo: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed wi...
Does the page declare schema.org Organization structured data? Parses every JSON-LD block (and microdata itemtype attributes) on the page and returns whether a Organization object is present, how many, and the Organizati...
Does the page declare schema.org LocalBusiness structured data? Parses every JSON-LD block (and microdata itemtype attributes) on the page and returns whether a LocalBusiness object is present, how many, and the LocalBus...
Does the page declare schema.org Product structured data? Parses every JSON-LD block (and microdata itemtype attributes) on the page and returns whether a Product object is present, how many, and the Product object(s) th...