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Is This Website Built With Joomla?

Paste any URL below. Our scanner checks 7 Joomla-specific fingerprints — scripts, CDN domains, HTML attributes, and HTTP headers — and returns a confidence score instantly.

How to Tell if a Website Uses Joomla

Identifying whether a website was built with Joomla used to require technical expertise — inspecting source code, tracing network requests in DevTools, and knowing which patterns to look for. Our free scanner automates all of that: it fetches the page, analyzes 7 Joomla-specific signals, and returns a verdict with a confidence score.

You might want to detect Joomla for competitive research, due diligence before acquiring a site, or simple curiosity. Whatever the reason, this page covers every method — automated and manual.

What is Joomla?

Joomla is a veteran open-source CMS that holds the second-largest market share among self-hosted CMS platforms after WordPress — powering millions of sites for small businesses, government agencies, and non-profits worldwide. Its flexible user access management (ACL) and multilingual support built into the core (no plugin required) make it popular for organizations with complex permission structures and international audiences. Joomla's extension directory has 8,000+ extensions for adding functionality. Joomla sites are identifiable through /media/jui/ paths for jQuery UI assets, com_content references in URL query strings (index.php?option=com_content), the Joomla generator meta tag containing the version number, and /administrator/ path for the backend. The Joomla JavaScript namespace and component-specific CSS classes (mod-articles-category, com_content) appear throughout the markup. Joomla is free and open-source.

It is primarily used for content-driven websites, blogs, news sites, documentation, and publishing platforms.

Visit Joomla official website

Signs a Website Is Built With Joomla

Our detection engine checks 7 unique Joomla fingerprints. Here are the most reliable signals:

High Confidence

JavaScript / Script Files

Joomla loads specific JavaScript runtime files or loads scripts from identifiable URLs. Checking script src attributes reveals the platform.

joomla/media/jui
High Confidence

HTTP Response Headers

Joomla-hosted sites respond with specific HTTP headers that identify the platform or infrastructure. These are visible in DevTools → Network tab.

x-content-powered-by
Medium Confidence

HTML Attributes & Class Names

Joomla injects proprietary class names, data attributes, or markup patterns into the page HTML that are unique to the platform.

joomlacom_content
Medium Confidence

Meta Tags

Some Joomla sites include a generator meta tag or other platform-specific meta elements in the document head.

joomlaJoomla

How to Manually Detect Joomla Websites

Method 1 — View Page Source

  1. Open the website in your browser
  2. Press Ctrl+U (Windows) or Cmd+Option+U (Mac)
  3. Search (Ctrl+F) for joomla or joomla
  4. If found in script src, class names, or meta tags — it's likely Joomla

Method 2 — Browser DevTools Network Tab

  1. Press F12 to open DevTools
  2. Click the Network tab and reload the page
  3. Filter by joomla in the search box
  4. If you see requests to Joomla-specific domains, it's confirmed
Faster: Skip the manual steps — paste the URL into our scanner above and we check all 7 signals in seconds.

How Our Joomla Detector Works

When you submit a URL, our engine fetches the page from its server — just like a browser would — then analyzes the response across 7 Joomla-specific fingerprints:

Script analysis

We scan all loaded JavaScript files for known CDN paths and runtime names

CDN domain matching

We cross-reference every asset request against known platform CDNs

HTML pattern scanning

We search the DOM for platform-specific class names and data attributes

Header inspection

We read HTTP response headers that identify the server or platform

Meta tag extraction

We check generator and other meta tags in the document head

Confidence scoring

We weight each matched signal and normalize to a 0–99% score

How to Build a Similar Website With Joomla

Install Joomla from https://joomla.org, set up your content models, and connect a frontend framework like Next.js or Gatsby to display your content.

Other popular CMS platforms include WordPress, Ghost, Contentful, Sanity, and Strapi.

Get started with Joomla

Frequently Asked Questions

How can I tell if a website was built with Joomla?

The most reliable ways to detect Joomla are: (1) open DevTools → Network tab and look for requests to Joomla-specific CDN domains, (2) view page source and search for Joomla-specific class names or data attributes, (3) use our free scanner — we check 7 detection signals automatically and return a confidence score.

Is your Joomla detector free?

Yes, completely free. Paste any URL into our scanner and we'll analyze it for Joomla fingerprints immediately. No account required, no limits on scans.

How accurate is the Joomla detection?

We check 7 unique Joomla fingerprint signals across HTML, JavaScript, CDN domains, meta tags, and HTTP headers. Our confidence score reflects how many signals matched — a score above 70% is a strong indicator. We cap accuracy at 99% to reflect that all fingerprint-based detection is probabilistic.

Can Joomla sites be detected if they use a custom domain?

Yes. Custom domains don't hide the underlying platform. The JavaScript files, CDN requests, HTML attributes, and server headers all remain identifiable regardless of the domain name used. Our scanner fetches the page directly and analyzes its technical composition.

What should I do after detecting a Joomla website?

If you want to build something similar, visit https://joomla.org to learn more or sign up. If you're doing competitive research, our scan result also shows the full technology stack — including hosting platform, domain age, and other detected technologies. You can share the result link with your team.