Enter a URL — and in seconds find out which CMS (platform) a site is built on: WordPress, OpenCart, Tilda, Bitrix and more, its version and tech stack, and whether it is custom-built and on which framework.
heleum CMS Detector is a free online tool that shows which content management system (CMS) any site is built on: WordPress, OpenCart, Joomla, Tilda, 1C-Bitrix, Drupal, Shopify and dozens more. It analyses the page code and server headers, finds characteristic fingerprints and returns the CMS name, the version where available, a confidence level and the list of detected signals.
If a site is built without a typical CMS, the tool recognises this and shows which framework it runs on (Laravel, Django, Next.js, ASP.NET, etc.) — or marks it as custom-built. We also show accompanying technologies: analytics, pixels, CDN, jQuery.
Who it is for: SEO specialists and marketers (size up a competitor's or client's site), developers and agencies (understand the stack before work), business owners — before ordering services.
Enter a domain or a link to a page. You can skip the https:// prefix.
The request goes to our service, which loads the page and analyses its code and headers. Your own site is not involved.
You see the CMS name (or “custom-built site” with a framework), version, confidence, detection signals and accompanying technologies. The result can be copied.
From popular WordPress, OpenCart and Tilda to niche MODX, DataLife Engine, NetCat and UMI.CMS — plus frameworks for custom-built sites.
If there is no typical CMS, we show the framework (Laravel, Next.js, ASP.NET…) or mark it as custom development — not just “not found”.
We show not just the name but also the version (where available), the confidence level and the specific signals it was detected by — transparent and verifiable.
The page is loaded by an isolated service, not your site. No extensions — everything works right in your browser.
Knowing the stack is just the start. We will audit your site or a competitor's and show what to change to rank higher in search. Free.
Paste the site URL and click "Detect". Our service loads the page code and server headers, finds characteristic fingerprints (paths, the generator meta tag, cookies, scripts) and shows the CMS name, the version where available, a confidence level and the list of signals found.
The same way — enter the URL of any public site. The tool works on third-party domains, so it is handy for competitor research: you will see the CMS or framework, the version and the accompanying technologies (analytics, CDN, libraries) the site is built with.
It is a site built without a ready-made CMS — usually on a web framework (Laravel, Django, Next.js, ASP.NET, etc.) or by hand. If we see framework fingerprints we show them; if not, we mark the site as a custom build.
Many sites deliberately hide the CMS version for security (they strip the generator meta tag). The CMS name is usually still visible from other signals, but the version is not always.
For popular CMSs the accuracy is high. But some sites mask their CMS, sit behind a proxy/CDN or are heavily customised — then you may see "low confidence" or "custom". We show the signals so you can judge the result yourself.
Yes, free and with no sign-up. Enter a URL and click "Detect". The check runs through our service, so it works even for sites that block browser-side checks.
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ReadA CMS detector is a site reconnaissance tool. It shows which platform a page is built on: a ready-made CMS, a web framework or a custom build. This is useful for competitor SEO analysis, sizing up a site before work and choosing a contractor.
The tool makes a server-side request, reads the page code and headers, looks for characteristic signals and returns the name, version, confidence and the list of signals — transparently, so the result can be verified.
A CMS (content management system) is the platform a site runs on: WordPress, OpenCart, Joomla, Tilda and so on. Knowing the CMS, you can assess a site's capabilities and limits, pick the right SEO and optimisation tools, understand why a site is slow or poorly indexed, and plan the work.
Every CMS leaves characteristic traces in the code: WordPress — the /wp-content/ and /wp-includes/ paths, the /wp-json REST API; OpenCart — the index.php?route= parameters and the catalog/view folder; 1C-Bitrix — the /bitrix/ folder; Joomla — /media/jui/. Many CMSs also write their name and version into the generator meta tag or server headers. The tool checks dozens of such signals.
Not every site is built on a ready-made CMS. Large projects are often written on frameworks: PHP — Laravel, Symfony, Yii; Python — Django, Flask; JavaScript — Next.js, Nuxt, Express; .NET — ASP.NET. We mark such sites as custom-built and show the framework by its signals (a session cookie, special paths or the X-Powered-By header).
A site may hide its CMS, sit behind a CDN (Cloudflare), be heavily reworked or combine several technologies. That is why we show not only the conclusion but also the confidence level and the specific signals — so you can judge the reliability of the result yourself.
The tool checks only public http/https addresses. Local and internal addresses are blocked, and we do not store the full page code — the analysis happens on the fly. The check is run by our service, so your site gets no extra load.