Security Tools
Browser-based security utilities. All computation runs client-side — no input data is ever sent to any server.
Password Strength Checker
Analyze entropy, crack time, and get improvement suggestions.
Password Generator
Generate cryptographically random passwords with custom options.
Hash Generator (SHA-256/512)
Generate SHA-256 or SHA-512 cryptographic hashes from any text.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
URL Encoder / Decoder
Percent-encode or decode URL strings for query parameters.
JWT Decoder
Inspect JWT header, payload, and check token expiry.
CIDR Subnet Calculator
Get network address, broadcast, subnet mask, and host count.
UUID v4 Generator
Generate one or many cryptographically random UUIDs.
Secret Key Generator
Generate random keys in hex or base64 for HMAC, AES, JWT.
HMAC Generator
Sign messages with HMAC-SHA256 or HMAC-SHA512.
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