Security & Privacy
Cryptographic password generator, SHA256 checksums, UUIDs, and token generators.
Free online Cryptography tools.
2FA TOTP Secret Key Generator
Generate Google Authenticator compatible Base32 secret keys.
Adler-32 Checksum Tool
Compute fast Adler-32 rolling checksums used in zlib compression.
Argon2 Memory Cost Calculator
Compute optimal memory and iteration parameters for Argon2id hashing.
Base32 Text Decoder
Decode Base32 strings back into standard UTF-8 text.
Base32 Text Encoder
Encode strings into RFC 4648 Base32 alphabet for two-factor authenticator keys.
Base58 Decoder
Decode Base58 (Bitcoin alphabet) strings back into standard UTF-8 text.
Base58 Encoder
Encode strings into Base58 (Bitcoin alphabet), avoiding ambiguous characters like 0, O, I, l.
Bcrypt Hash Explainer
Understand adaptive salt rounds and Blowfish encryption in Bcrypt hashes.
Binary Hash Calculator
Compute cryptographic hashes directly from raw binary byte arrays.
CRC-32 Checksum Calculator
Compute 32-bit cyclic redundancy check codes for ZIP archives and network frames.
Django & Flask Secret Key Generator
Generate a cryptographically secure SECRET_KEY for Django or Flask.
HMAC Generator
Generate an HMAC signature (SHA-1, SHA-256, SHA-384, SHA-512) with a secret key.
Password Entropy Calculator
Measure password strength in mathematical bits of entropy.
PBKDF2 Key Derivation Generator
Derive cryptographic keys using HMAC-SHA256 with custom iterations.
PEM Key Format Inspector
Inspect RSA and ECDSA public and private keys in PEM format client-side.
RIPEMD-256 Hash Generator
Generate 256-bit RIPEMD cryptographic message digests client-side.
Salted Hash Generator
Generate cryptographically salted hash digests to defend against rainbow tables.
SHA-1 Hash Generator
Compute 160-bit SHA-1 hashes for legacy Git and checksum verifications.
SHA-384 Hash Generator
Generate NIST-compliant 384-bit cryptographic hash checksums in your browser.
SHA2 Hash Generator
Generate SHA-256, SHA-384 and SHA-512 hashes from text at once.
Free online Tokens & API Keys tools.
API Key Generator
Generate prefixed high-entropy API keys (e.g. sk_live_..., pk_test_...) with custom prefixes and lengths.
OTP Generator
Generate temporary numeric and alphanumeric OTP security verification codes for staging and auth tests.
PIN Generator
Generate secure numeric PIN codes for ATM cards, locks, phone passcodes, and verification challenges.
Random Token Generator
Generate cryptographically secure hexadecimal, alphanumeric, and Base64 auth tokens.
Secret Key Generator
Generate 256-bit and 512-bit secret keys for AES encryption, HMAC signatures, and environment variables.
Free online Encoding & Web Security tools.
Base64 Decoder
Decode Base64 encoded strings back to original readable UTF-8 text and payloads.
Base64 Encoder
Encode UTF-8 text and binary data into standard RFC 4648 Base64 strings with zero server uploads.
URL Decoder
Decode percent-encoded URL links and parameters back into clean human-readable text.
URL Encoder
Encode URL query parameters, paths, and special characters into safe percent-encoding (%20, %26).
URL Safe Base64 Encoder
Encode text using the URL-safe / base64url alphabet (- and _ instead of + and /, no padding).
Free online JSON Web Tokens tools.
Free online Cryptographic Hashing tools.
MD5
Generate 128-bit MD5 message digest checksums from any string or payload in real time.
SHA256
Compute FIPS 180-4 standard 256-bit SHA-256 hashes using browser Web Crypto hardware acceleration.
SHA512
Calculate ultra-secure 512-bit SHA-512 cryptographic digests for passwords and digital signatures.
Free online Passwords & Credentials tools.
Passphrase Generator
Generate Diceware-style multi-word memorable passphrases that are easy to remember and impossible to crack.
Password Strength Checker
Evaluate password strength, NIST complexity compliance, entropy bits, and estimated brute-force crack time.
Strong Password Generator
Generate ultra-high-entropy 24+ character passwords resistant to dictionary and brute-force attacks.