Free security tools.
Instant results.

Scan ports, discover subdomains, find vulnerabilities — powered by Nmap and our own scanning engine. No signup, no install, no limits on basic scans.

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Security Toolkit

Professional-grade tools.
Zero cost for basic scans.

— Nmap-Powered

Port Scanner

Scan open ports, detect services and versions. Powered by Nmap — the industry standard.

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— DNS + CT Logs

Subdomain Finder

Discover subdomains via DNS enumeration, certificate transparency logs, and HTTP probing.

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— OWASP Top 10

Website Scanner

Find SQL injection, XSS, SSRF, and more. Deep crawling with CVE detection and EPSS scoring.

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— Certificates & TLS

SSL/TLS Checker

Certificate chain, TLS versions, cipher suites. Heartbleed & POODLE detection.

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— DNS Records

DNS Lookup

All DNS records, SPF, DMARC, DNSSEC validation, zone transfer testing.

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— Security Headers

HTTP Headers

9 security headers graded A+ to F. CSP, HSTS, X-Frame-Options, Referrer-Policy.

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— Fingerprinting

Tech Stack

WhatWeb fingerprinting — CMS, servers, languages, JS libraries, CDN detection.

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— CMS Security

CMS Scanner

WordPress, Joomla, Drupal vulnerability scanner. Plugins, themes, misconfigs.

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How it works

Three steps. No signup required for basic scans.

1

Enter your target

Domain, IP address, or URL. We figure out the rest.

2

Get instant results

Open ports, subdomains, vulnerabilities — displayed in seconds.

3

Go deeper when ready

Sign up free for history and more scans. Upgrade for full port ranges, API, and monitoring.

Scan anything.
Pay when you need more.

Free for basic scans. Pro starts at $19/month for unlimited access, API, and monitoring.

Try Website Scanner View pricing