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Access 61 tools for SEO, DNS, uptime, tech stack, security, and AI readiness checks. Run quick validations or deep diagnostics without paywalls.
Free comprehensive website audit and SEO analysis tools.
Free DNS lookup, domain age, and propagation tools.
Free website security, SSL, and HTTP header checking tools.
Free website performance testing and tech stack detection tools.
Free email deliverability and configuration checkers.
Free domain research, IP lookup, and WHOIS tools.
Free webmaster utilities and SEO generators.
Free Generative Engine Optimization (GEO) and AI readiness checkers.
Prepare your architecture for Generative Engine Optimization (GEO) through AI readiness and crawler analysis.
Start with full audits, uptime, SSL, DNS, and technical SEO when something feels broken or slow.
Look up global server infrastructure, tech stacks, DNS propagation, and domain ownership clues.
Check if your website is SEO-friendly with a full on-page audit
Check if your website is accessible and WCAG compliant
AI-powered visual design and usability review
Test if your website is optimized for AI search engines and LLMs
Complete audit: SEO + Accessibility + UI/UX + AI Readiness
Look up all DNS records for any domain
Domain registration details and ownership info
Find mail exchange servers for a domain
View all TXT records including SPF, DKIM, DMARC
Find authoritative nameservers for a domain
Check if DNSSEC is enabled and properly configured
Find out when a domain was registered and when it expires
Check if your website SSL certificate is valid and secure
Inspect all HTTP response headers
Grade your security headers (CSP, HSTS, X-Frame, etc.)
Trace the full redirect chain from URL to final destination
View and analyze a site's robots.txt file
Find insecure HTTP resources on HTTPS pages
Identify technologies, frameworks, and CMS used by a website
Inspect all meta tags including Open Graph and Twitter Cards
Preview how your URL looks when shared on social media
Estimate the carbon emissions of a webpage
Validate and analyze a website's sitemap.xml
Find broken links on any webpage
Measure page load performance and Core Web Vitals
Check SPF, DKIM, DMARC, and mail server configuration
Find the IP address and geolocation of any domain
Find where a website's server is physically located
Check if a website is up or down right now
Extract all internal and external links from a webpage
Scan common ports to find open services
Test how strong your password is — 100% client-side, private
Generate perfect meta tags for SEO and social sharing
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly
Encode or decode Base64 text instantly
Encode or decode URL-encoded strings
Format, validate, and beautify JSON data
Generate a robots.txt file for your website
Build Content-Security-Policy headers visually
Check if your site has an llms.txt file for AI crawlers
Validate JSON-LD and Schema.org markup for rich results
Audit cookies, tracking scripts, and GDPR compliance signals
Analyze H1-H6 heading hierarchy for SEO and accessibility
Check if a website supports HTTP/2 or HTTP/3 (QUIC)
Check favicons, web app manifest, and PWA readiness
Check if DNS changes have propagated globally
Check Brand Indicators for Message Identification (email logo)
Check if AI crawlers (GPTBot, ClaudeBot) are blocked in robots.txt
Validate canonical URLs to prevent duplicate content issues
Analyze total page size, resources, and compression
Validate hreflang tags for multi-language websites
Score how quotable and extractable your content is for AI
Analyze entity density and knowledge graph signals
Deep audit of HTML5 semantic elements and landmarks
Check if your content is formatted for AI answer engines
Score how likely AI engines are to cite your content
Check readiness for Google Knowledge Panel and AI entity recognition
Validate all meta tags that matter for AI and social sharing
Analyze internal linking depth and orphan page signals
Analyze word count, readability, and content signals
Audit images for alt text, lazy loading, and modern formats
Keyword depth
Our tools are designed to answer specific technical questions instantly, whether you're searching for "free dns lookup", "check ssl certificate online free", "what technology does a website use", or "is website down for everyone".