Free Security & Crypto Tools
Privacy-first security utilities for authentication debugging, webhook verification, encoding, and certificate inspection.
Your data stays in your browser
Sensitive inputs (tokens, passwords, keys, and configs) are processed locally in your browser and is never sent to a server.
All tools · Security
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Web Server Config
Lint nginx configs and build CORS response headers.
Certificate & PEM Tools
Inspect PEM blocks, SSH fingerprints, X.509 certs, CSRs, and SSL payloads.
Hash Digest Generator
Compute MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 digests.
Hash Utilities
Compare hashes safely, identify algorithms, and constant-time string compare.
Password Generator
Generate secure passwords, memorable passphrases, and numeric PINs.
Password Analyzer
Check password strength, estimate entropy, and mask secrets in text.
Crypto Token Generator
Generate API keys and random cryptographic salt bytes.
URL Encoder / Decoder
Percent-encode and decode URL query strings.
Hex Encoder / Decoder
Encode text to hexadecimal and decode hex bytes to UTF-8.
HTML Entity Encoder / Decoder
Encode and decode HTML entities for safe markup embedding.
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