Security & Privacy.
Generate secure values and inspect common security formats locally.
Password Generator Pro
Generate multiple cryptographically random passwords with configurable length and character sets.
Password Generator
Generate random passwords with configurable character sets.
UUID Generator
Generate UUID v4 identifiers in your browser.
Password Strength Estimator
Estimate password length and character-class diversity locally.
Password Entropy Estimator
Estimate theoretical entropy from length and alphabet size.
Secure Token Generator
Generate random URL-safe tokens with browser crypto.
Random PIN Generator
Generate a cryptographically random numeric PIN.
Passphrase Generator
Generate a readable random passphrase from a local word list.
Random Hex Generator
Generate random hexadecimal bytes.
SHA-256 Text Hash
Calculate a SHA-256 digest using Web Crypto.
SHA-512 Text Hash
Calculate a SHA-512 digest using Web Crypto.
HMAC-SHA256 Generator
Calculate an HMAC-SHA256 digest with a supplied key.
Hash Comparator
Compare two hash strings without case sensitivity.
JWT Payload Decoder
Decode JWT header and payload without verifying signatures.
UUID Batch Generator
Generate multiple UUID v4 identifiers.
Hex to Text Decoder
Decode a hexadecimal byte string to UTF-8 text.
Text to Hex Encoder
Encode UTF-8 text as hexadecimal bytes.
Base64 URL-Safe Encoder
Encode text as URL-safe Base64.
CSP Header Builder
Build a starter Content-Security-Policy header.
CSP Directive Explainer
Explain common Content-Security-Policy directives.
Password Masking Tool
Mask a pasted secret for display or sharing.
Secure Random Number
Generate a random integer in a chosen inclusive range.
File SHA-256 Checker
Calculate a SHA-256 hash of a selected file.
URL Safety Checklist
Review a URL for common suspicious patterns.
HTML Sanitisation Preview
Remove script and event-handler patterns from an HTML snippet.
Secret Redactor
Redact likely email, phone and token patterns from text.