Tools for Cybersecurity Professionals
Browser-based security and networking tools for sysadmins, pentesters, and security engineers. Subnet calculators, password generators, JWT decoders, and hashing tools.
Available tools
Ready to use now. These tools run in your browser unless noted otherwise.
Secure Password Generator
Generate secure, high-entropy passwords with custom length and character sets.
CIDR Subnet Calculator
Calculate IP subnet masks, network boundaries, usable host ranges, and broadcast IPs.
Password Strength Analyzer
Analyze password strength, crack-time estimates, and character entropy bits.
Hash Generator & Verifier
Generate and verify MD5, SHA-1, SHA-256, and SHA-512 cryptographic checksums.
JWT Decoder and Encoder
Decode JSON Web Tokens and inspect header, payload, and signature data.
SSL Certificate Decoder
Decode X.509 SSL/TLS certificates and inspect validity, SANs, and issuer chains.
CSP Header Builder
Construct secure Content Security Policy headers for web applications.
Security.txt Generator
Create standardized security.txt files for vulnerability disclosure policies.