Free website tool

Free Tech Stack Detector

Detect the technology stack of any website including CMS (WordPress, Shopify), frameworks (React, Next.js), analytics tools, CDNs, hosting providers, and more using Wappalyzer-style fingerprinting.

Performance & Tech

Methodology

1Fetches the target page and analyzes HTTP headers, HTML meta tags, JavaScript globals, cookie names, and resource URLs to fingerprint technologies.
2Detects CMS platforms (WordPress, Shopify, Wix), JavaScript frameworks (React, Next.js, Vue), analytics tools (GA4, Plausible), CDNs (Cloudflare, Fastly), and hosting providers.
3Results are categorized by technology type with confidence levels and version detection where available.

Next steps

What to do with your results

→Review detected technologies for any that are outdated or have known vulnerabilities.
→Consider whether your tech stack is optimal for your use case — e.g., heavy WordPress sites may benefit from a static site generator.
→Check if CDN and caching layers are properly configured for your framework.
→Use this data for competitive analysis — compare your stack against top-performing competitors.

Learn more

Frequently asked questions

Tech Stack Detector — Common questions

Is the Tech Stack Detector on CheckWebs really free?+

Yes — the Tech Stack Detector is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.

How accurate is the Tech Stack Detector?+

Our Tech Stack Detector runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.

How does tech stack detection work?+

We analyze HTTP headers, HTML meta tags, JavaScript globals, cookie names, and page patterns to fingerprint frameworks, CMS platforms, analytics tools, and hosting providers.

Can I detect which CDN a website uses?+

Yes — our detector identifies Cloudflare, Fastly, AWS CloudFront, Akamai, and other CDNs from response headers and DNS patterns.

Is this similar to BuiltWith or Wappalyzer?+

Yes, it serves the same purpose but runs entirely free with no signup. We use similar fingerprinting techniques to identify technologies.

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Home/Tools/Performance & Tech/Tech

Free website tool

Free Tech Stack Detector

Detect the technology stack of any website including CMS (WordPress, Shopify), frameworks (React, Next.js), analytics tools, CDNs, hosting providers, and more using Wappalyzer-style fingerprinting.

Performance & Tech

Methodology

1Fetches the target page and analyzes HTTP headers, HTML meta tags, JavaScript globals, cookie names, and resource URLs to fingerprint technologies.
2Detects CMS platforms (WordPress, Shopify, Wix), JavaScript frameworks (React, Next.js, Vue), analytics tools (GA4, Plausible), CDNs (Cloudflare, Fastly), and hosting providers.
3Results are categorized by technology type with confidence levels and version detection where available.

Next steps

What to do with your results

→Review detected technologies for any that are outdated or have known vulnerabilities.
→Consider whether your tech stack is optimal for your use case — e.g., heavy WordPress sites may benefit from a static site generator.
→Check if CDN and caching layers are properly configured for your framework.
→Use this data for competitive analysis — compare your stack against top-performing competitors.

Learn more

Frequently asked questions

Tech Stack Detector — Common questions

Is the Tech Stack Detector on CheckWebs really free?+

Yes — the Tech Stack Detector is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.

How accurate is the Tech Stack Detector?+

Our Tech Stack Detector runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.

How does tech stack detection work?+

We analyze HTTP headers, HTML meta tags, JavaScript globals, cookie names, and page patterns to fingerprint frameworks, CMS platforms, analytics tools, and hosting providers.

Can I detect which CDN a website uses?+

Yes — our detector identifies Cloudflare, Fastly, AWS CloudFront, Akamai, and other CDNs from response headers and DNS patterns.

Is this similar to BuiltWith or Wappalyzer?+

Yes, it serves the same purpose but runs entirely free with no signup. We use similar fingerprinting techniques to identify technologies.

Free Tech Stack Detector

Methodology

What to do with your results

Related guides

Tech Stack Detector — Common questions

Free Tech Stack Detector

Methodology

What to do with your results

Related guides

Tech Stack Detector — Common questions