Webmaster tools
Free, single-input lookups. No signup, no API keys. Each tool runs one focused query and shows the result — useful when you need a quick answer about a domain or page without firing the full audit.
Security
CSP Checker →
Parse a site's Content-Security-Policy header and flag the common footguns — unsafe-inline, wildcard sources, missing frame-ancestors, no reporting.
CSP Generator →
Build a draft Content-Security-Policy from a checklist — tick the third-party services you use and we'll emit a policy with sensible defaults.
Blacklist Lookup (DNSBL) →
Is your mail server's IP on Spamhaus, Barracuda, SORBS or a dozen other DNSBLs? Mail delivery, reputation, security signal.
Email Privacy Check →
Find email addresses exposed on a page — mailto: links + plaintext leaks — and tell you which are role addresses (fine) vs personal addresses (scrape bait).
Network
DNS Lookup →
A, AAAA, MX, NS, TXT, SPF, DMARC, DKIM records for any domain.
IP & Hosting Info →
Resolve a host to its IP, get the AS number, hosting provider, and country.
WHOIS Lookup →
Registrar, creation date, expiry date, nameservers.
www Redirect Checker →
Probe apex ↔ www and HTTP ↔ HTTPS — see the full redirect chain and final destination for each entry point.
Server Status Checker →
One-shot HTTP probe — status code, latency, redirect chain, key response headers.
Technical
Mobile Friendly Check →
Does the page have a viewport meta, responsive CSS hints, readable font sizes?
Meta & SEO Tags →
Title, description, keywords, Open Graph, Twitter Card, canonical, lang.
Page Size Checker →
Sum HTML + linked assets (images, scripts, stylesheets, fonts) to see what a first-time visitor actually downloads.