API Key Generator
Generate production-ready API keys using your browser's cryptographic random number generator. Choose from hex (256-bit), Base64url (256-bit), or prefixed formats (like sk_live_, pk_test_). All generation is client-side — nothing is sent to a server.
Loading tool...Loading tool...
Common Use Cases
- Bootstrap API keys for new SaaS applications
- Generate test keys for development environments
- Create webhook signing secrets
- Prototype key management without a key server
Frequently Asked Questions
How many bits of entropy do these keys have?
The 32-byte options give 256 bits of entropy, and the 64-byte options give 512 bits. Both are far beyond what is computationally feasible to brute-force.
Can I use these keys directly in production?
The keys themselves are cryptographically secure. However, you should store them securely (hashed in your database), use them over HTTPS only, and implement proper key rotation policies.
Related Tools
Password GeneratorGenerate cryptographically secure passwords with custom length, character sets, and strength analysis.UUID GeneratorGenerate UUIDs v4 and v7 in bulk. Supports multiple formats: standard, no-dashes, braces, and URN.HMAC GeneratorGenerate HMAC-SHA256 and HMAC-SHA512 signatures for message authentication and API request signing.
Tool Info
CategorysecurityAI EnhancementNoData StorageZero retention