Analyze Any Website
Detect AI builders, identify the CMS, and analyze the technology stack behind any website — free, instant, no account needed.
7,967
websites scanned
80+
builders detected
Free
no account needed
Detect AI Builders
Find out if a website was built using Framer, Lovable, Bolt, or other modern AI tools.
Discover Website Technology
Identify the CMS, frameworks, hosting providers, and infrastructure powering any website.
Build a Similar Website
Browse AI-built websites and find inspiration for your next project.
Example Analysis
See what a real result looks like before your first scan.
Recently Scanned
Live
Popular Websites Analyzed
Most scanned websites in the last 7 days
AI Website Development Trends
Distribution of verdict types in recent scans (400 samples, last 30 days).
Top AI Builders Detected
Most frequently detected AI-first platforms on AI Website Detector.
Who uses this tool
Checking a competitor
Find out which AI builder or CMS powers a competing product or agency site.
Vetting a freelancer
Verify whether the portfolio site a developer sent was actually custom-built or AI-generated.
Market research
Understand how many sites in your niche are using AI-first builders vs traditional platforms.
Learning & curiosity
Curious how a beautiful site was made? Detect the tech stack in one click.
How It Works
Our detection engine analyzes multiple signals to identify which technology powers any website.
Enter a URL
Paste any website URL into the scanner. No account required.
AI Analyzes the Site
We scan HTML, scripts, CDN patterns, and HTTP headers for 80+ builder fingerprints.
Get Instant Results
See the builder detected, confidence score, signals found, and a screenshot.
What We Detect
HTML Patterns
CSS classes, data attributes, and markup signatures unique to each builder.
Script Tags
JavaScript runtime files, CDN URLs, and framework fingerprints.
CDN Domains
Asset delivery networks that reveal which platform powers the site.
HTTP Headers
Server headers like X-Powered-By that identify the hosting platform.
Explore by Builder
Learn about the most popular AI website builders we detect.
Framer
AI BuilderAI-powered design tool for interactive websites
Webflow
AI BuilderNo-code platform with advanced CMS capabilities
Durable
AI BuilderGenerates complete business websites in 30 seconds
Lovable
AI App BuilderBuild full-stack apps from natural language prompts
Bolt
AI BuilderInstant web apps from AI-powered prompts
WordPress
CMSThe world's most popular CMS platform
Frequently Asked Questions
How do I check if a website was built with AI?
Paste the URL into AI Website Detector and click Detect. Our engine runs a multi-stage analysis: builder fingerprinting (80+ platforms), tech stack detection, component architecture analysis (Shadcn UI, Lucide, Radix), AI code signals, design heuristics, hidden pattern scanning, and JavaScript bundle artifact detection. You get an AI probability score (0–99%), a verdict label, and a full reasoning explanation.
Which AI website builders can you detect?
We detect 80+ platforms including Framer, Lovable, Bolt, Durable, 10Web, Hostinger AI, Typedream, Mixo, Gamma, Wix AI, and more. We also detect WordPress, Shopify, Squarespace, Webflow, Ghost, and traditional frameworks. For custom-domain Lovable and Bolt deployments we scan JavaScript bundles for builder artifact strings that survive even when platform branding is removed.
What do the verdict labels mean?
AI-Native Build: a specific AI builder was fingerprinted (Framer, Lovable, Bolt…). AI-Augmented Development: modern stack (Next.js + Tailwind + Shadcn/Lucide) or bundle artifacts strongly consistent with vibe-coding tools like v0, Cursor, or Lovable. Modern AI-Compatible Stack: modern framework detected, AI involvement possible. Manual / Custom Build: backend framework (Flask, Django…) detected — AI may power features but the site is hand-coded. Traditional Architecture: no AI signals found.
Can you detect vibe-coded or Cursor-built websites?
Yes — that's a core capability. We look for the component stack AI coding tools produce: Next.js + Tailwind CSS + Shadcn UI + Lucide Icons + Radix UI. We also scan JavaScript bundles for Lovable artifact strings, v0 component patterns, Bolt runtime identifiers, and AI-generated code comments. Sites with these signals score 65%+ and receive the 'AI-Augmented Development' verdict even without explicit builder fingerprints.
How accurate is the detection?
For major platforms with clear fingerprints (Framer, Lovable, WordPress, Shopify) accuracy is 85–99%. Bundle artifact scanning adds strong evidence for AI tools deployed to custom domains. Vibe-coded sites without artifacts are scored on stack heuristics — probability is an estimate, not a certainty. The reasoning engine always explains which signals were detected.
Is this tool free?
Yes, completely free — no account, no credit card, no rate limits for normal use. You can scan any website instantly.
What is the full tech stack analysis?
Beyond the primary builder, we detect: analytics tools (Google Analytics, Hotjar, Mixpanel, PostHog…), CDN providers (Cloudflare, AWS CloudFront, Fastly…), marketing tools (HubSpot, Intercom, Crisp, Drift…), and payment processors (Stripe, PayPal, Klarna…). WordPress sites get deep plugin and theme analysis.
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