SSL/TLS Certificate Diagnostic Tool

Comprehensive certificate analysis, security grading, and diagnostics from the command line. Written in Rust.

ssl-toolkit — bash — 80x24
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Features

Everything you need for
SSL/TLS diagnostics

dns

DNS Resolution

Multi-provider DNS lookups with A, AAAA, CNAME records and DNSSEC validation.

tls

TLS Analysis

Protocol detection (TLS 1.0-1.3), cipher analysis, and handshake inspection.

cert

Certificate Ops

Inspect, verify, and convert certificates. PEM/DER/PKCS#12 support.

whois

WHOIS Lookup

Domain registration details, registrar info, and expiration monitoring.

grade

Security Grading

Automated A+ through F grading based on industry best practices.

report

Reports & Export

HTML reports, JSON output for CI/CD, and iCal expiry reminders.

Get Started

Ready to analyze your
SSL/TLS certificates?

Check out the documentation to get started with ssl-toolkit.

ssl-toolkit MIT License © 2026 Russ McKendrick
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