Website Tools
Run point-in-time checks for public webpages, domains, DNS, certificates, redirects and site resources. Confirm important findings with the relevant host or provider.
Safe Route Diagnostic
Resolve a public host and inspect network ownership without shell access.
Schema Markup Generator
Generate basic JSON-LD schema markup.
Schema Markup Validator
Extract and validate JSON-LD structured data from a public webpage.
Security Headers Checker
Check important website security headers.
SERP Preview Tool
Preview your Google search result snippet.
Sitemap URL Extractor
Extract all URLs from an XML sitemap.
SPF Record Checker
Find and validate a domain SPF email policy.
SSL Checker
Verify SSL certificate validity and expiry date.
Subdomain Finder
Discover public subdomains from certificate transparency records.
TTFB Checker
Measure time to first byte and total initial response time.
Twitter Card Preview Tool
Preview a Twitter/X social card instantly.
Webpage Keyword Density Checker
Calculate a supplied phrase frequency against readable text fetched from a public page.
Webpage Word Count Checker
Measure readable page words, paragraphs, characters and estimated reading time.
Website Cookie Scanner
List cookies set by the initial public page response.
Website Favicon Checker
Find declared favicon files and verify whether the primary icon is reachable.
Website IPv6 Support Checker
Check whether a public hostname publishes one or more IPv6 AAAA records.
Website Migration URL Validator
Check old and new URL pairs for status, redirect destination and migration mismatches.
Website Ping Test
Measure DNS and secure HTTP response latency.
Website Screenshot Generator
Create desktop or mobile website screenshot previews.
Website Speed Test
Analyze page loading speed and response time.
Website Technology Detector
Detect frameworks, analytics, CDN and common site technologies.
Website Uptime Checker
Check if any website is online or down instantly.
WHOIS / RDAP Lookup
Look up public domain registration data using RDAP.
XML Sitemap Generator
Generate a simple XML sitemap from your URLs.
XML Sitemap URL Analyzer
Fetch an XML sitemap or sitemap index and count its declared page locations.
XML Sitemap Validator
Validate sitemap XML, URL limits and public URL entries.