Random String Generator
NewGenerate one or many random strings with full control over length (1–256), count (1–100), and character set. Presets include alphanumeric, alphabetic, numeric, hex, base64url, lowercase, uppercase, and symbols. Define a custom charset or exclude ambiguous characters (0, O, 1, l, I). Shows bits of entropy per string. All generation uses crypto.getRandomValues().
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Common Use Cases
- Generate random tokens for API keys and secrets
- Create random nonces for CSRF protection
- Generate test input strings for fuzz testing
- Create random identifiers for database seeding
- Generate random hex strings in bulk
Frequently Asked Questions
How secure are the generated strings?
All strings are generated using crypto.getRandomValues(), the browser's CSPRNG. A 32-character alphanumeric string provides ~190 bits of entropy — exceeding the 128-bit security level used by AES-128.
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Tool Info
CategorygenerationAI EnhancementNoData StorageZero retention