Security hardware
Free online security hardware tools running 100% in your browser.
Index telesnej hmotnosti (BMI kalkulačka)
Rýchlo zmerajte zdravotný stav tela podľa noriem Svetovej zdravotníckej organizácie.
Local File Encryption & Vault (AES-256 GCM)
Encrypt and lock sensitive files, photos, PDFs, and archives client-side using military-grade AES-256 GCM and PBKDF2 with zero cloud transmission.
Keyboard Hardware Tester
Interactive 104-key ANSI keyboard layout tester. Detect dead switches, verify anti-ghosting with N-key rollover counter, and inspect raw event keycodes with click sounds.
Screen Dead Pixel Tester
Fullscreen monitor diagnostic tool to spot dead pixels, stuck subpixels, color uniformity, and backlight bleeding across 9 primary calibration colors plus high-speed pixel restorer.
Webcam & Microphone Diagnostic Tester
Test webcam video resolution, actual framerate (FPS), mirror flip, take snapshot photos, and monitor microphone volume VU decibel meters with 100% client privacy.
Mouse, Double-Click & Touch Screen Tester
Diagnose faulty mouse switches (detect double-click chatter <80ms), test all 5 mouse buttons & scroll wheel, measure CPS speed, and test 10-point multi-touch displays.
Password Strength & Shannon Entropy Auditor
Measure Shannon entropy in bits, detect dictionary patterns, inspect character composition pools, and simulate brute-force crack times across RTX 4090 GPU rigs. 100% private in-browser.
IP Geolocation Lookup & WebRTC Security Auditor
Discover exact geographic location, Autonomous System (ASN), ISP, and coordinates for any IP address, with real-time WebRTC private IP leak auditing and CDN ping latency measurements.
JWT Debugger, Decoder & HMAC-SHA256 Secret Signature Verifier
Decode and inspect JSON Web Tokens (JWT) in real-time with automated claim expiration audit (exp countdown) and 100% private in-browser HMAC-SHA256 signature verification via Web Crypto.
Cryptographic Checksum & Hash Verifier
Verify file integrity, detect bitrot corruption, and compare SHA-256, SHA-512, SHA-1, and MD5 hashes entirely inside your browser using Web Crypto API.
Subnet Mask & CIDR Range Visualizer
Calculate usable host ranges, broadcast addresses, wildcard masks, and inspect 32-bit binary network versus host bit boundaries.
SSL / TLS Certificate Decoder
Decode X.509 PEM certificates client-side. Inspect SAN domains, validity dates, issuer, key size, and SHA-256 fingerprints.
Password Entropy & Security Analyzer
Calculate Shannon entropy bits, character pool size & brute force crack time across throttled, GPU, and supercomputer tiers.
TOTP Authenticator & 2FA Secret Tester
Generate & verify RFC 6238 Time-based One-Time Passwords with HMAC-SHA1/256/512, 30s wheel & drift inspection.
Base58 & Base58Check Encoder/Decoder
Encode and decode Bitcoin, Solana, and IPFS Base58 strings with double-SHA256 checksum validation and hexadecimal inspection.
RSA Key Pair Generator & Tester
Generate cryptographically secure 2048-bit and 4096-bit RSA PEM key pairs in browser using Web Crypto API with live encryption verification.