Security & Cryptography Tools for Privacy-Conscious Users

Worried about your passwords? Test their strength with entropy analysis, generate cryptographic hashes with MD5/SHA-256/SHA-512, and explore classical ciphers like Caesar — all running 100% locally in your browser. No data leaves your device.

Protect your digital life with tools that never touch a server. Test password strength, generate cryptographic hashes, and explore classical ciphers — all running locally in your browser with zero data transmission. Privacy-first security utilities for developers and everyone.

Security & Cryptography
New Tools

Missing something?

Tell us what tool you're looking for and we'll build it for you. We love new ideas!

Newsletter

Get Free Productivity Tips & New Tools First

Join makers and developers who care about privacy. Every issue: new tool drops, productivity hacks, and insider updates — no spam, ever.

Priority access to new tools
Unsubscribe anytime, no questions asked