Free Crypto & Security Tools
Free online encryption, hashing, and security tools - no sign-up, no installation.
Encrypt, decrypt, hash, generate passwords, and more. All processing happens in your browser.
All Tools (21)
AES Encrypt/Decrypt
Encrypt and decrypt text using AES-256.
Base64 Decode
Decode Base64 encoded strings to plain text.
Base64 Encode
Encode text to Base64 format.
Bcrypt Generator
Generate bcrypt password hashes.
Caesar Cipher
Encrypt/decrypt with the Caesar cipher.
Checksum Generator
Generate MD5, SHA-1, SHA-256 checksums.
Diff Checker
Compare two texts and highlight differences.
Hash Generator
Generate hashes using multiple algorithms.
HMAC Generator
Generate HMAC signatures for message authentication.
HTML Encode/Decode
Encode or decode HTML entities.
JWT Decoder
Decode and inspect JSON Web Tokens.
MD5 Generator
Generate MD5 hashes from text or files.
Password Generator
Generate strong, random passwords.
Punycode Converter
Convert between Unicode and Punycode domains.
Random String Generator
Generate random strings for any purpose.
Regex Tester
Test regular expressions with real-time matching.
ROT13
Encode/decode text using ROT13 cipher.
SHA-256 Generator
Generate SHA-256 hashes from text or files.
URL Encode/Decode
Encode or decode URL-encoded strings.
UUID Generator
Generate random UUIDs (v4).
XOR Encrypt/Decrypt
Encrypt/decrypt text using XOR cipher.
How to Use Crypto & Security Tools
Our crypto and security tools run entirely in your browser - no data is sent to any server. Your sensitive information stays private.