Developer tools. Security checks. Zero bloat.
A clean collection of utilities for developers and security professionals. Private by design — most tools run entirely in your browser.
Utilities
Tools
Password generator
Cryptographically secure. Client-side only — nothing leaves your browser.
Base64 encode / decode
Encode or decode Base64 strings instantly, with URL-safe variant support.
JSON formatter
Parse, validate, and pretty-print JSON with syntax highlighting.
JWT decoder
Inspect token headers, payload claims, and expiry. Never sends tokens anywhere.
Regex tester
Test regular expressions with real-time match highlighting and flag controls.
DNS lookup
Query A, AAAA, MX, TXT, CNAME, and NS records for any domain.
TLS validation
Verify TLS certificate validity, chain, issuer, and expiry date.
HTTP headers
Inspect security headers: CSP, HSTS, X-Frame-Options, Referrer-Policy.
Education
Learn
Practical guides on SSH, Linux hardening, Cloudflare Tunnel, Zero Trust, and real-world server security — written for engineers, not marketers.
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