Joomla Theme Detector
Instantly discover which Joomla theme any website is using. Free, fast, accurate — no signup required.
Trusted by designers, developers & marketers
Why use the RevealTheme Joomla detector?
The most reliable way to inspect any site.
Instant Results
Theme + extension data in under 2 seconds. No queue, no signup, no rate limits.
Always Free
100% free for personal and commercial use. No premium tier, no upsells.
High Accuracy
98%+ detection rate for standard Joomla installs.
Privacy First
We don't store the URLs you check. No tracking, no logs.
Multi-Platform
We also detect Shopify, Magento, Joomla, Drupal, Moodle, and PrestaShop.
Always Updated
Detection rules updated weekly to match the latest theme and plugin patterns.
Inspect any Joomla site instantly
Designers use it. Developers love it. Marketers swear by it.
Reveal Any Joomla Site's Tech Stack
Designers use it. Developers love it. Marketers swear by it.
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Joomla Detector — Frequently Asked Questions
Our detector fetches the public HTML, CSS, and JavaScript of the URL you provide, then uses fingerprinting rules to identify the theme and any installed extensions. Most detections complete in under 2 seconds.
Joomla calls its themes 'templates' — and the RevealTheme Joomla detector identifies the active template on any Joomla 4 or Joomla 5 site. Joomla templates are referenced via predictable paths like /templates/{template-name}/ and /media/templates/site/{template-name}/. We extract these from the page HTML along with the Joomla generator meta tag to confirm the CMS version and return the active template name. Detection takes under two seconds.
How to use the joomla template detector
- Paste any Joomla site URL above.
- Click 'Detect Template'. We fetch the homepage HTML.
- The detector first verifies the site is on Joomla by checking the generator meta tag and the /templates/ or /media/templates/site/ asset paths.
- If Joomla is confirmed, we extract the template name (excluding the system template 'system' which is built into Joomla core).
- The template name is prettified and returned as the detection result.
What is a Joomla template?
Joomla is an open-source CMS released in 2005, popular for community and association sites, government portals, and small business websites. Joomla calls its themes 'templates' (terminology choice from 2005 — predates the modern 'theme' convention). A Joomla template controls the visual design, layout regions, and module positions. Joomla 4 (released 2021) and Joomla 5 (released 2023) significantly modernized the template architecture — adding the Cassiopeia default template, mobile-first design, and improved accessibility. Templates can be free (the Joomla Extension Directory lists hundreds) or paid (premium templates from vendors like JoomShaper, JoomlArt, TemplateMonster). The RevealTheme Joomla detector works on Joomla 3, 4, and 5 sites, though Joomla 3 reached end-of-life in August 2023 so most active sites have migrated.
Common use cases
- Joomla developers identifying templates used by competitor sites in their niche
- Web designers researching template designs that work well for community sites
- Agencies migrating sites from Joomla 3 to Joomla 4/5 — auditing current templates first
- Template developers tracking adoption of their own templates
- Government and non-profit web teams researching standard Joomla template choices
Frequently asked questions
Does it work on Joomla 3, 4, and 5?
Yes, all three. Joomla 3 uses /templates/{name}/ paths; Joomla 4 and 5 use the newer /media/templates/site/{name}/ structure. The detector handles both.
Why does it sometimes show the template as 'cassiopeia'?
Cassiopeia is the default front-end template that ships with Joomla 4 and 5. Many sites use it as-is or with minor customizations.
Can it tell me if the template is free or paid?
Indirectly. Templates with names matching the Joomla core ('cassiopeia', 'protostar') are free. Most other names are paid templates from third-party vendors.
Is detection reliable on heavily customized Joomla sites?
Yes — even heavily customized Joomla sites still reference the base template name via the standard /templates/ path because Joomla core relies on it. Detection rate is 95%+ on live Joomla sites.
What if the site is on Drupal or WordPress instead?
If we don't detect Joomla signals, we'll suggest the correct detector — try our WordPress, Drupal, or other CMS detectors.
Related tools
About this tool. The Joomla Template Detector is part of RevealTheme's free suite of web technology detection tools. See our how it works page for the technical details, or our methodology for how we test the themes and plugins we recommend.
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