Ruby on Rails is a full-stack, convention-over-configuration web framework that popularized the MVC pattern for the modern web, still widely used by startups and established products (GitHub, Shopify, Basecamp) that value its productivity-focused conventions. Rails doesn't set a distinctive `X-Powered-By` header by default, so AIWebsiteDetector instead looks for Turbo/Hotwire markup (`data-turbo-*` attributes, `rails-ujs`, `@hotwired/turbo`) that Rails' default JavaScript stack injects into rendered pages, plus the `X-Runtime` response header Rails' middleware adds to every response.
Detect Ruby on Rails Websites — Free Tool
Enter any URL to check if it was built with Ruby on Rails. Instant results, no account required.
How we detect Ruby on Rails — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Ruby on Rails Websites
HTML Patterns
3 patterns
HTTP Headers
1 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for ruby on rails-specific patterns in the HTML.
4. Use AI Website Detector (Easiest)
Our automated scanner checks all these signals at once and gives you an instant confidence score. Just enter any URL above.
Frequently Asked Questions
Is this website built with Ruby on Rails?
You can detect if any website was built with Ruby on Rails by using our free scanner above. Just enter the URL and we'll analyze HTML patterns, JavaScript files, CDN domains, and HTTP headers to determine if Ruby on Rails was used — with a confidence score.
How to detect if a website was built with Ruby on Rails?
There are several ways to detect Ruby on Rails: (1) View the page source and look for Ruby on Rails-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Ruby on Rails CDN domains, (3) Use our free tool — we check 4 detection signals automatically.
What websites are built with Ruby on Rails?
Ruby on Rails is used by thousands of websites worldwide. Our scanner has detected many Ruby on Rails-built sites across different industries. You can scan any URL to check if it uses Ruby on Rails.
How accurate is the Ruby on Rails detection?
Our Ruby on Rails detection engine checks 4 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
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Detection Info
- Category
- Backend Framework
- Signals Used
- 4 patterns
- Accuracy
- High
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