About Us
smartzone4u.com is a simple, English-only toolkit for developers who need quick crypto/encoding conversions and ID generation. It’s intentionally lightweight and focused on practical “copy → run → paste” workflows.
What you can do here
- Generate RS256 RSA keys, compute MD5/SHA hashes, and sign/verify HS256 JWTs.
- Convert URL params, Base64/Base64URL, Hex, ASCII, and more.
- Generate UUIDs and nanoid values in single or batch mode.
Notes
- Most tools run directly in your browser.
- No SEO extras or heavy features — just functional utilities.
- Need help? Reach us via email: [email protected]