Was this website built by AI or a human? Enter any URL for an instant verdict — identifies the exact AI tool used: Framer, Wix ADI, Bolt.new, Lovable, Vercel v0, ChatGPT, Claude, Gemini and 20+ more.
We check for CDN domains, CSS class names, meta generator tags and attribution badges unique to each AI builder — Framer, Wix, Webflow, Bolt.new, Lovable, Squarespace and 15+ more.
📄 HTML Comment Detection
AI tools like Bolt.new, Lovable.dev and Cursor IDE often leave code comments in the HTML. We scan for these signatures including model names and tool attributions.
🔗 API Reference Scanning
We detect direct references to AI company APIs in page source: OpenAI/ChatGPT, Anthropic Claude, Google Gemini and xAI Grok API endpoints.
☁️ Hosting & DNS Fingerprints
Vercel and Netlify headers, IP ranges and CNAME targets are checked — these platforms are overwhelmingly used for AI-generated app deployments.
🏠 Human-Built Detection
If no AI signals are found, we identify the human-built platform: WordPress, Ghost, Drupal, Joomla, custom frameworks or hand-written code.
🔎 Generator Meta Tags
The HTML generator meta tag is checked for known AI builder names — the most reliable single signal for identifying the authoring tool.
AI Builder vs. AI-Assisted Development
Not all AI involvement looks the same to a detector. We can only find what leaves a trace — so results fall into three different categories:
🤖 AI Website Builders
Lovable, Bolt.new, v0, Framer AI, Wix ADI and similar platforms generate the whole site and leave detectable fingerprints — CDN domains, HTML attributes, generator tags. These we can identify with real confidence.
💻 AI-Assisted Coding
A developer using ChatGPT, Claude, or Cursor to help write code, then deploying it manually, usually leaves no trace at all. The output looks identical to hand-written code. A "Human-Built" result never rules this out.
👨💻 Traditional Development
Hand-coded sites, or ones built on WordPress, Shopify, Webflow and similar platforms without any AI builder involved.
Important: we detect technical fingerprints and infrastructure signals, not developer intent. A site can use AI-generated code without leaving anything we can measure — that's a limit of what's technically detectable, not a flaw specific to this tool.
Frequently Asked Questions
How does the AI website detector work?
It scans a website for over 40 technical signals including AI builder fingerprints, CMS signatures, JavaScript frameworks, and meta tags to determine whether the site was built with AI tools like Framer AI, Wix ADI, Webflow, or custom code.
Is the AI website detector free to use?
Yes, the AI website detector on Anonymiz is completely free. Simply enter any URL and get instant results showing which AI tools, CMS, or frameworks were used to build that site.
Which AI website builders can it detect?
It can detect Framer AI, Wix ADI, Webflow, Squarespace, Shopify, WordPress, ChatGPT-generated sites, and many more. It also identifies custom-coded sites and flags the specific tech stack in use.
Will it show which AI built the site?
Yes — that is the primary output. The result shows a clear verdict like "Built with Framer AI" or "Built with Bolt.new" when we detect a specific AI builder. If multiple are detected, all are shown. If no AI is found, it says "Human-Built" and identifies the platform.
What if it says Human-Built but I used AI?
If you used an AI assistant like ChatGPT or Claude to write your code but then deployed it yourself (not through an AI builder), there may be no detectable signatures left in the HTML. AI-written code looks identical to human-written code without explicit comments or API references.
Which AI builders leave the clearest signals?
Framer AI, Wix ADI, Bolt.new, Lovable.dev and Vercel v0 are the easiest to detect — they inject CDN domains, attribution badges or data attributes. Squarespace and Webflow are also very reliable. Custom ChatGPT-generated code deployed manually is the hardest to detect.
What is the AI confidence score?
The score (0-100) reflects how many and how strong the AI signals are. 0-20: likely human-built. 20-40: weak AI signals. 40-70: probable AI builder. 70-100: strong confirmed AI builder signals. The score is based on the strength and number of matching signatures.
Can it detect if AI wrote the text content?
No — detecting AI-written text requires NLP analysis and is a separate problem. This tool only detects the website building platform and infrastructure signals, not the content authorship.
Why might the scan fail or show Unknown?
Sites that block crawlers (Cloudflare bot challenges, login-gated pages) cannot be scanned. Some sites use custom CDNs that mask builder signatures. Very minimal single-page sites may not have enough HTML to analyse.
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