Random Bytes Generator

Random bytes come from your browser CSPRNG; do not reuse for keys across contexts.

About Random Bytes

Generated via the browser CSPRNG (window.crypto.getRandomValues). Suitable for nonces, salts, and tokens (with appropriate handling).

Random bytes generator online in-browser CSPRNG (no upload)

FAQs

Is getRandomValues cryptographically secure?: Yes, it uses the platform CSPRNG designed for cryptographic use.
How many bytes should I generate?: Depends on application; 16 bytes for nonces, 32 bytes for keys are common baselines.
Does this tool upload my data?: No. All randomness is generated locally in your browser.

Random string/bytes generator FAQs

FAQs

Secure vs pseudo?: Use cryptographically secure RNGs for keys/tokens; avoid Math.random() for secrets.