// open security tools — swiss made

Security tools
that work for
you

A growing collection of free, browser-based security utilities. No sign-up. No telemetry. No backend processing. Your data stays exactly where it belongs — with you.

explore tools view source
8+ security tools
100% client-side
AES-256 encryption standard
0 bytes collected
// tools

Pick your tool.

↗
[~]
Text Encrypt / Decrypt
AES-256-GCM encryption in the browser. Passphrase-protected, authenticated, tamper-evident.
live aes-256-gcm pbkdf2
↗
[#]
Hash Generator
MD5, SHA-1, SHA-256, SHA-384 and SHA-512 for any text or file. Includes checksum verification.
live sha-256 file integrity
↗
[*]
Password Analyzer
Entropy score, crack-time estimates, pattern detection and HaveIBeenPwned breach check.
live hibp entropy
view all tools 5 more available ↗
[01]
Client-side only
Every operation runs inside your browser using native Web APIs. No data is ever sent to a server. There is no backend processing.
[02]
Zero dependencies
No npm packages. No CDN-loaded crypto libraries. No supply chain attack surface. Just the browser's own audited engine.
[03]
Open source
Every line of code is public. Audit it, fork it, deploy it yourself. Security through transparency, not obscurity.
[04]
Swiss-grade privacy
No cookies. No analytics. No fingerprinting. No advertising. A tool that respects the person using it.
// get started now

No account needed.
Just open and use.

All tools work offline once loaded.

$ open kryptar.ch/tools
→ no install required. works offline.
✓ zero telemetry confirmed.
browse all tools →