Cryptographically Secure PRNG

This tool generates cryptographically secure random values using the browser Web Crypto API, including bytes, integers, and passwords.

Key Features

• Random bytes, integers, and password generation
• Output formats: Hex/Base64/Base64URL/Base32/Binary
• Batch generation with per-item copy
• Built-in presets for common security use cases

Steps

1. Select random value type.
2. Configure length/range/charset options.
3. Generate and inspect output.
4. Copy single result or batch results.

Use Cases

• API key/session token/OTP secret generation
• Randomized test data
• Security feature integration testing

Notes

• Prefer Web Crypto randomness for security-sensitive scenarios.
• Avoid Math.random() for secret/token generation.
• Align password rules with your security policy.