Password & Security
Client-side cryptographic generators & audit tools • 24 Tools
Cryptographically secure passwords, passphrases, PINs, tokens, HMAC, hashes, entropy calculation, and password strength auditing. All tools execute 100% locally in your web browser with zero server transmission.
Generators
(10)Cryptographic Password Generator
Generate cryptographically strong passwords using crypto.getRandomValues() with custom length and character sets.
High-Entropy Strong Password Generator
Generate maximum-security 24+ character passwords designed for master vaults and infrastructure keys.
Diceware Passphrase Generator
Generate memorable, high-entropy multi-word passphrases using the official EFF Diceware wordlist.
Cryptographic PIN Generator
Generate 4, 6, 8, or custom-digit numeric PINs using cryptographically secure random values.
Custom Set Random String Generator
Generate cryptographically random strings from custom character sets, hex, or base58.
API Key & Bearer Token Generator
Generate high-entropy 32, 64, or 128-byte tokens in Hex, Base64, or URL-safe Base64 for API keys.
Format-Preserving API Key Generator
Generate structured API keys with custom prefixes (e.g. sk_live_, pk_test_) and checksums.
UUIDv4 Generator & RFC 4122 Validator
Generate cryptographically random RFC 4122 Version 4 UUIDs or validate and inspect existing UUID strings.
NanoID Collision-Resistant ID Generator
Generate compact, URL-friendly, collision-resistant unique identifiers using NanoID algorithm.
Cryptographic Secret Key Generator
Generate 256-bit and 512-bit cryptographic secret keys for JWT secrets, database encryption, and cookies.
Audit & Analysis
(4)Password Strength & Entropy Auditor
Audit password strength, Shannon entropy bits, character diversity, and vulnerability to common dictionary attacks.
Password Entropy Calculator
Calculate theoretical information entropy in bits for any password based on character pool sizes.
Brute-Force Password Crack Time Estimator
Estimate time required to crack a password against modern GPU clusters and quantum cracking rates.
HTTP Security Headers Evaluator
Review and generate recommended HTTP security headers (CSP, HSTS, X-Frame-Options, Permissions-Policy).
Hashing
(8)Multi-Algorithm Hash Generator
Compute cryptographic hashes across MD5, SHA-1, SHA-256, SHA-384, and SHA-512 simultaneously.
SHA-256 Hash Calculator
Generate 256-bit SHA-2 cryptographic digests using standard Web Crypto API.
SHA-512 Hash Calculator
Compute 512-bit SHA-2 cryptographic hashes producing 128-character hexadecimal digests.
SHA-384 Hash Calculator
Compute truncated 384-bit SHA-2 cryptographic hashes producing 96-character hexadecimal digests.
SHA-1 Checksum Calculator
Calculate legacy 160-bit SHA-1 checksums for Git commit IDs and file verification.
MD5 Checksum Calculator
Generate 128-bit MD5 checksums for legacy file integrity verification and database cache keys.
HMAC-SHA Signature Generator
Generate keyed-hash message authentication codes (HMAC) using SHA-256, SHA-512, or SHA-1.
Browser File Hash & Checksum Calculator
Calculate SHA-256 and MD5 checksums of local files without uploading them to any server.