Free Website Reconnaissance

Discover the technology stack behind any website

Enter any URL to fingerprint the technologies powering a website. This tool detects web servers, programming languages, JavaScript frameworks, CMS platforms, CSS frameworks, CDN providers, analytics tools, and more — all from a single page request.

Trusted by teams at

Ramp
Pilot
Vercel
Stripe
Better Auth
SST
OpenCode

How it works

How Website Reconnaissance works

01

Enter a URL

Paste any website URL. The tool fetches the page and inspects both the HTTP response headers and HTML source code for technology signatures.

02

Fingerprint technologies

We analyze server headers, meta tags, JavaScript globals, HTML patterns, and resource paths to identify the web server, CMS, frameworks, CDN, analytics tools, and more.

03

Get a security-focused analysis

Each detected technology is assessed for security implications — from exposed version numbers that reveal CVE targets to analytics scripts that leak data to third parties.

Features

What Website Reconnaissance checks

Detect CMS and web frameworks

Identifies WordPress, Drupal, Joomla, Shopify, Squarespace, Wix, Next.js, Nuxt.js, Angular, React, Vue, Svelte, and other popular platforms from HTML patterns and meta tags.

Identify server and language stack

Extracts the web server (Nginx, Apache, IIS, Cloudflare), programming language (PHP, Python, Ruby, Java, .NET), and version information from response headers.

Catalog CDN and hosting providers

Detects Cloudflare, Fastly, Akamai, AWS CloudFront, Vercel, Netlify, and other CDN/hosting providers from response headers and DNS patterns.

Find analytics and tracking scripts

Lists analytics platforms (Google Analytics, Segment, Mixpanel), tag managers (Google Tag Manager), and other third-party scripts embedded in the page.

Flag version information leakage

Highlights exposed version numbers in Server headers, meta generator tags, and script URLs that help attackers identify specific CVEs to exploit.

Use cases

Who should use the free Website Reconnaissance

Penetration Testers

Kickstart reconnaissance with automated technology fingerprinting. Knowing the exact stack helps you prioritize attack vectors and select the right tools for the engagement.

Developers & Architects

Research competitor tech stacks or evaluate potential technology partners. Understand what frameworks, CDNs, and analytics tools successful sites in your space use.

Security Teams

Audit your organization's web properties for technology exposure. Identify sites leaking version information that makes them easier targets for automated vulnerability scanners.

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FAQ

Frequently asked questions

Everything you need to know about the free Website Reconnaissance.

Go beyond Website Reconnaissance

This free Website Reconnaissance checks a handful of things. Maced's AI pentest checks thousands.

Get a full autonomous penetration test — including OWASP Top 10, authentication flaws, business logic errors, API security, and more — with a compliance-ready report in hours.

Proof of exploit on every finding · SOC 2 & ISO 27001 compatible