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Free SSL Scanner & SSL Vulnerability Scanner

Comprehensive SSL/TLS security scanner with certificate chain analysis, cipher suite enumeration, compliance mapping, and vulnerability detection. Instant results with detailed analysis and exportable reports in multiple formats.

Vulnerability Detection

POODLE, BEAST, Sweet32, FREAK & more

Certificate Chain

Full chain analysis & validation

Compliance Mapping

PCI DSS, HIPAA, SOC 2, GDPR, NIST

Multi-Format Export

PDF, HTML, Markdown, JSON

Our SSL scanner and SSL vulnerability scanner is a comprehensive free online tool that provides in-depth analysis of SSL/TLS certificates, configurations, and security posture. Whether you're looking for an alternative to Qualys SSL scan or need a quick SSL scan online, our tool delivers instant results with professional-grade security assessments. Use our SSL certificate checkerto verify certificate validity, analyze full certificate chains, check expiration dates, enumerate cipher suites, and assess your SSL security configuration.

The SSL test tool performs comprehensive checks including certificate chain validation, protocol support (TLS 1.0, 1.1, 1.2, 1.3), actual cipher suite enumeration with detailed breakdown, HTTP security headers analysis, DNS CAA records, connection details, and identifies named vulnerabilities like POODLE, BEAST, Sweet32, FREAK, Logjam, ROBOT, and more. Get a security grade from A+ to F, along with actionable recommendations to improve your SSL/TLS security posture. Our SSL analyzer provides the same level of detail as professional security tools, making it perfect for website owners, security professionals, compliance officers, and DevOps teams who need a reliable SSL checker online.

Unlike other SSL certificate test tools, our scanner provides detailed vulnerability explanations with CVE references, compliance mapping across multiple frameworks (PCI DSS 4.0, HIPAA, SOC 2 Type II, GDPR, NIST CSF), exportable reports in multiple formats (PDF, Markdown, HTML, JSON), email report delivery, and real-time scanning without registration. Whether you're performing a quickSSL security test or conducting a comprehensive TLS security scanner assessment for compliance purposes, our free tool delivers professional-grade results instantly with full cipher suite enumeration and compliance framework analysis.

SSL/TLS Scanner
Enter a domain name to scan its SSL/TLS configuration, certificate details, and security vulnerabilities.
What is SSL/TLS Scanning?

SSL/TLS scanning is the process of analyzing a website's SSL (Secure Sockets Layer) or TLS (Transport Layer Security) certificate and configuration to assess its security posture. This includes checking certificate validity, supported encryption protocols, cipher suites, and identifying potential vulnerabilities that could compromise the security of encrypted connections. Our SSL scanner and SSL vulnerability scanner provides instant, comprehensive analysis similar to Qualys SSL scan but with faster results and detailed remediation guidance.

Regular SSL scanning is essential for maintaining website security, ensuring compliance with security standards, and protecting user data from interception or tampering. Our SSL scan online tool provides comprehensive analysis to help you identify and remediate security issues before they become problems. Whether you need a quick SSL test or a detailed SSL certificate checker, our free tool delivers professional-grade results.

Key Features of Our SSL Scanner
Certificate Analysis
Comprehensive certificate details including validity, issuer, expiration dates, key size, and fingerprint.
Protocol Detection
Identifies supported TLS/SSL protocol versions and flags deprecated protocols that should be disabled.
Cipher Suite Analysis
Detects weak or insecure cipher suites and recommends strong, modern encryption algorithms.
Vulnerability Detection
Scans for common SSL/TLS vulnerabilities including expired certificates, weak keys, and misconfigurations.
Security Scoring
Provides an overall security grade (A+ to F) and detailed recommendations for improvement.
Export Reports
Download comprehensive scan results in JSON format for documentation and compliance purposes.
Common SSL/TLS Vulnerabilities
Expired or Expiring Certificates

Certificates that have expired or are close to expiration can cause browser warnings and security issues. Regular monitoring and timely renewal are essential.

Deprecated Protocol Support

Support for outdated protocols like SSLv2, SSLv3, TLS 1.0, and TLS 1.1 exposes your site to known vulnerabilities. Only TLS 1.2 and TLS 1.3 should be enabled.

Weak Cipher Suites

Cipher suites using RC4, DES, 3DES, MD5, or NULL encryption are considered weak and should be disabled. Use only strong, modern cipher suites.

Incomplete Certificate Chain

Missing intermediate certificates in the chain can cause validation failures in some browsers and clients. Ensure the full certificate chain is properly configured.

Weak Key Sizes

Certificates with key sizes smaller than 2048 bits are vulnerable to attacks. Use certificates with at least 2048-bit keys (preferably 4096 bits for RSA).

Self-Signed Certificates

Self-signed certificates are not trusted by browsers by default and can cause security warnings. Use certificates from trusted Certificate Authorities (CAs).

SSL/TLS Security Best Practices
  • Enable TLS 1.3
    TLS 1.3 offers improved security and performance. Enable it alongside TLS 1.2 for maximum compatibility.
  • Disable Deprecated Protocols
    Completely disable SSLv2, SSLv3, TLS 1.0, and TLS 1.1 to prevent known vulnerabilities.
  • Use Strong Cipher Suites
    Configure your server to only accept strong, modern cipher suites. Prefer AES-GCM and ChaCha20-Poly1305.
  • Monitor Certificate Expiration
    Set up automated monitoring to alert you before certificates expire. Renew certificates well in advance.
  • Use Certificates from Trusted CAs
    Always use certificates issued by trusted Certificate Authorities to ensure browser trust and avoid warnings.
  • Regular Security Scans
    Perform regular SSL scans to identify and remediate security issues before they become problems.
Who Should Use an SSL Scanner?
Website Owners

Ensure your website's SSL/TLS configuration is secure and compliant with industry standards.

Security Professionals

Perform security assessments and identify vulnerabilities in SSL/TLS implementations during penetration tests.

DevOps Teams

Monitor SSL certificate health, verify configurations after deployments, and maintain security best practices.

Frequently Asked Questions