🔐Best Free Security & Crypto Tools
Hash generators, encryption tools, SSL checkers, password testers, and network analysis.
14 tools
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes from any input text.
Text Encryption/Decryption
Encrypt and decrypt text using AES encryption.
Password Strength Checker
Check how strong your password is and get improvement suggestions.
SSL Certificate Checker
Check SSL certificate details, expiry date, and chain validity.
DNS Lookup
Look up DNS records for any domain: A, AAAA, MX, TXT, CNAME, and NS.
WHOIS Lookup
Look up domain registration information.
IP Address Lookup
Look up your public IP address and basic network information.
Bcrypt Hash Generator
Generate and verify bcrypt password hashes with configurable rounds.
HMAC Generator
Generate HMAC authentication codes using various hash algorithms.
Checksum Calculator
Calculate and verify file checksums (MD5, SHA-1, SHA-256).
CSP Header Generator
Generate Content Security Policy headers for your website.
ROT13 Encoder
Encode and decode text using the ROT13 substitution cipher.
Caesar Cipher
Encrypt and decrypt text using the Caesar cipher with custom shift.
Random Bytes Generator
Generate cryptographically secure random bytes in hex or base64.
About This Collection
Essential cybersecurity tools for developers and IT professionals. Generate hashes, encrypt and decrypt data, check SSL certificates, test password strength, look up DNS records, and analyze network security — all running securely in your browser.