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.
Ads.txt Checker & Validator
Check whether a root ads.txt file is reachable and review its authorized seller records.
All-in-One Website Health Checker
Audit uptime, SSL, redirects, headers, SEO and page health.
Broken Image Checker
Find page images and test a bounded sample for missing or failed image responses.
Broken Link Checker
Scan a page and find broken internal or external links.
Bulk URL Status Checker
Check HTTP status and response time for up to 20 public URLs.
Canonical URL Checker
Extract and inspect canonical tags from HTML.
CDN & Cache Detector
Detect common CDN signatures and inspect caching headers.
CMS Detector
Detect WordPress, Shopify, Wix and other common platforms.
Complete Lighthouse Audit
Audit performance, accessibility, best practices and SEO.
Core Web Vitals Checker
Check Lighthouse performance and Core Web Vitals metrics.
CORS Headers Checker
Inspect public response headers for cross-origin resource sharing declarations.
DKIM Record Checker
Verify a DKIM public key using its selector.
DMARC Record Checker
Inspect a domain DMARC policy and reporting settings.
DMARC Record Generator
Build a valid DMARC DNS record with guided options.
DNS Lookup
Find DNS records for any domain name.
DNS Propagation Checker
Compare DNS records across trusted public resolvers.
DNSSEC Checker
Check DS and DNSKEY records for a domain.
Domain Expiry Checker
Check domain registration and expiry dates.
Email Deliverability Checker
Review MX, SPF and DMARC setup without sending an email.
Email Header Analyzer
Parse email headers and review delivery and authentication details.
Gzip & Brotli Compression Checker
Inspect live response headers for content compression and variation signals.
Heading Structure Checker
Review live H1–H6 counts and heading order for a public webpage.
Hosting Provider Checker
Find the public IP, ASN and network provider for a domain.
Hreflang Tag Generator
Generate hreflang tags for multilingual pages.
HTML Table to CSV & JSON Extractor
Extract accessible table rows from a public webpage or pasted HTML and export CSV or JSON.
HTTP Cache Header Checker
Review Cache-Control, ETag, Expires, Age, Last-Modified and Vary headers.
HTTP Header Comparison Tool
Compare response status and important HTTP headers returned by two public URLs.
HTTP Headers Viewer
View response headers returned by a public website.
HTTP Status Checker
Check HTTP status codes and server responses.
HTTP/2 & HTTP/3 Checker
Inspect protocol hints and Alt-Svc headers for HTTP/2 and HTTP/3 support.
Image Alt Text Checker
Find images with useful, empty or missing alt attributes on a public page.
Internal & External Link Extractor
Extract public page links and separate internal, external and nofollow destinations.
IP & ASN Information
Review public IP, ASN, network provider and approximate region information.
IP Blacklist Checker
Check whether an IP appears on common DNS blacklists.
Keyword Density Checker
Analyze keyword frequency and density in your text.
Lazy Loading Checker
Check image and iframe loading attributes without running a synthetic lab test.
Live Canonical URL Checker
Fetch a public page and inspect its live rel=canonical declaration.
Live Hreflang Checker
Inspect alternate-language link tags and review language or region values.
Live Robots.txt Tester
Fetch a website robots.txt file and review user-agent, allow, disallow and sitemap directives.
Meta Tag Generator
Generate title, description and social meta tags.
Meta Title & Description Analyzer
Review a live page title, meta description, robots directive and primary heading.
Mixed Content Checker
Find insecure HTTP assets on HTTPS pages.
Mobile-Friendly Test
Review viewport, responsive signals and mobile performance.
MX Record Lookup
Find mail exchanger records and priorities for a domain.
Open Graph & Social Card Checker
Inspect live Open Graph and Twitter/X card metadata used for social previews.
Open Graph Preview Tool
Preview how your content appears when shared.
Page Indexability Checker
Review HTTP status, robots directives, canonical URL and common page-level indexing blockers.
Page Size & Resource Checker
Measure HTML size and count common page resources.