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See the technology signals a website exposes.

A CMS Detector is a specialized diagnostic tool designed to reveal the "DNA" of any website.

TECHNOLOGY CHECK

Enter a public URL and review the technology signals visible in its response.

01Public URL
02Pattern scan
03Readable result

Scan Engine

Checks page source, HTTP headers, cookies and known CMS paths. ENGINE STANDBY
About this tool

About Website Technology Checker

The Website Technology Checker looks at a public web address and reports the technology signals it can observe, such as the content management system, scripts, frameworks and server hints. It is a quick way to understand how a website is built without opening developer tools.

Developers use it to research competitors and plan migrations, freelancers use it before quoting a project, and site owners use it to confirm which platform and plugins a page is really using. Results are based on public signals, so treat them as strong clues rather than a guarantee.

Knowing what a website is built with explains a lot: how it is likely to be updated, which plugins may need patching and what a redesign would involve. The Website Technology Checker inspects a public page and reports the content management system, frameworks and libraries it can recognize from the page's own code.

Detection works from public signals such as meta tags, script paths and file names. That makes it fast and non-invasive, but also means a site that hides or customizes those signals may be reported as unknown, which is a limit of the method rather than an error.

Step by step

How to Use Website Technology Checker

  1. 1
    Enter a public URLType or paste the full address of the website, including https://, into the input field.
  2. 2
    Run the scanPress the detect button. The tool requests the public page and looks for known technology markers.
  3. 3
    Read the findingsReview the detected platform, libraries and server details listed in the result panel.
  4. 4
    Verify what mattersConfirm important details by checking the page source or asking the site owner before making decisions.
Real-world use

Where Website Technology Checker helps most

Competitor researchSee which platform and libraries a competing site uses before you decide how to build your own.
Before a redesignConfirm the CMS and theme stack of a site you are about to maintain or migrate.
Security housekeepingSpot outdated or unexpected libraries on your own pages that deserve an update.
Client onboardingIdentify what a new client's site runs on so you can quote and plan accurately.
Get better results

Practical tips for Website Technology Checker

  • Test the exact public URL, including https and the correct subdomain.
  • Try a second page, such as a blog post, if the home page returns little information.
  • Treat results as strong clues, not proof. Verify important findings in the page source or with the site owner.
  • Re-run the check after major updates to see whether old libraries are still loaded.
  • Combine the result with a speed test to see which technologies add the most weight.

Common mistakes to avoid

  • Entering a URL that redirects or needs a login and expecting a full report.
  • Assuming 'not detected' means the site uses no CMS at all.
  • Using detection results to guess at private information. The tool reads only what any visitor's browser can see.
Benefits

Why Use Website Technology Checker

No installation neededCheck a site from any browser without extensions or command-line tools.
Helpful for planningUnderstand a platform before you quote, redesign or migrate a website.
Clear, readable resultsFindings are grouped so non-developers can follow them.
Based on public signals onlyThe tool only reads what a visitor can already see, with no private access.

Good to know. The checker reads only publicly available page data. Use it on sites you own or are allowed to analyze. See the Privacy Policy for details.

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More guides to read next

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Questions & answers

Frequently Asked Questions

What does the Website Technology Checker detect?
It looks for public signals that point to a CMS such as WordPress, common JavaScript libraries, frameworks and server information exposed by the page.
Is the result always correct?
No. Sites can hide or change their markers, so results are best understood as informed clues. Verify anything important another way.
Can it scan any website?
It works with publicly reachable pages. Sites that block automated requests, require a login or are offline cannot be analysed.
Does the site owner get notified?
The tool makes a normal public request like any visitor would. It does not access private areas or attempt to bypass any protection.
Why does it say a technology is unknown?
Custom-built sites and heavily optimised pages often remove recognisable markers. In that case no confident match can be reported.
How can I use the result for SEO or development?
Use it to compare platforms, spot outdated libraries, understand competitor setups and decide which tools or plugins to learn next.