The Internet Intelligence Platform.
Search and explore millions of websites. Discover technology stacks, hosting providers, SEO insights, security configurations, performance metrics, and how sites connect to each other — all in one place, completely free.
Try a domain, or search like “react websites”, “wordpress ecommerce”, or “sites on vercel”.
230,304
Sites analyzed
329,850
Total scans
6
Scans in last 24h
81.01
Average score
Everything you need to understand any website
From technology detection to security audits — get a complete picture of any website in seconds.
Technology Stack Detection
Identify frameworks, CMS platforms, analytics tools, CDNs, and hundreds of other technologies powering any website — all automatically.
SEO Analysis
Evaluate meta tags, headings, structured data, robots.txt, sitemaps, and other on-page SEO factors to understand how sites optimize for search.
Security Assessment
Check TLS/SSL certificates, HTTP security headers, and cookie configurations. Instantly see a website's security posture.
Performance Metrics
Measure page size, response times, asset counts, and estimated load speeds. Understand what affects a website's performance.
Hosting & Infrastructure
Discover hosting providers, CDN networks, IP addresses, ASN information, and DNS records — revealing where and how websites run.
Knowledge Graph
Explore relationships between technologies, hosting providers, and websites through our interconnected data model.
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How It Works
Analyzing a website takes just seconds. Here's how.
Enter any domain
Type a website URL into the search box. It can be a simple domain like "github.com" or a full URL path.
Real-time analysis
Our engine fetches the page, inspects HTTP headers, parses HTML, checks DNS records, validates TLS certificates, and detects technologies — all in seconds.
Get your report
Receive a structured report with scores, explanations, and actionable recommendations for SEO, security, performance, accessibility, and more.
Explore the graph
Browse our index of millions of websites, filter by technology or provider, compare technologies head-to-head, and discover relationships.
Why Choose SiteGraph
We're building the most accessible, comprehensive, and transparent website intelligence platform on the internet.
Completely Free
No paid plans, no credit card, no usage limits. Analyze as many websites as you want, whenever you want.
Real-time Data
Every scan fetches fresh data. No stale caches, no outdated reports — just current information from live analysis.
Comprehensive Reports
From technology detection to security headers, DNS records to SEO scores — everything you need in one place.
Privacy Respecting
We analyze only publicly accessible information. No private data, no authentication, no tracking of users.
Scalable Index
Millions of websites analyzed and indexed. Search, filter, and compare across the largest public web technology dataset.
Transparent & Open
Clear methodology, honest data presentation, and easy opt-out for website owners who don't want to be indexed.
Who Uses SiteGraph
From developers to business owners, SiteGraph helps anyone understand the technology behind the web.
For Developers
Research technology stacks, find alternatives, and understand what powers the websites you admire or compete with.
For SEO Professionals
Audit meta tags, heading structures, canonical URLs, robots.txt, and sitemaps to identify optimization opportunities.
For Security Researchers
Quickly check security headers, TLS configurations, and cookie settings to assess a website's security posture.
For Product Managers
Understand the competitive landscape, see which technologies your competitors use, and make informed technical decisions.
For Business Owners
Check your own website's scores, compare with competitors, and identify areas for improvement in SEO, performance, and security.
For Curious Minds
Satisfy your curiosity about how websites work, what technologies they use, and where they're hosted — all for free.
Popular Technologies
The most widely used technologies in our index
Explore the Knowledge Graph
Browse websites by technology, hosting, CDN, security, or country
Frequently Asked Questions
Everything you need to know about SiteGraph
What is SiteGraph?
Is SiteGraph really free?
How does the technology detection work?
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Can I remove my website from SiteGraph?
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