Generated Keys
808a79c88211e6deae896e0cd116b1b018649acafa9b1742e5e4a3d302e8e4f8a313be4a09c82850b236713fda88d06caa0fdb521958d8d841939ad6160d76d2aa54e9dc5b51bbd286704dd90ec146a4API Keys
Secure authentication for REST APIs and web services.
Secret Keys
Encryption keys, JWT secrets, and signing keys.
Access Tokens
Session tokens, refresh tokens, and verification codes.
How to Generate Secure Random Keys
- 1
Choose your key format
Select the output format that fits your use case. Hex works well for encryption keys and hash-based tokens. Base64 is compact and commonly used for JWT secrets. Alphanumeric keys are URL-safe and easy to copy, while Base58 avoids visually confusing characters like 0/O and I/l. - 2
Set the key length
Use the length slider or input to pick the number of characters. For API keys, 32 to 64 characters offers a good balance of security and manageability. For AES-256 encryption keys, generate 64 hex characters (32 bytes). Longer keys provide more entropy but are harder to handle manually. - 3
Add an optional prefix
Type a prefix like sk_, api_, or key_ to make the purpose of each key immediately recognizable. Prefixed keys are easier to audit in configuration files and help your team quickly identify which service or environment a key belongs to. - 4
Generate and copy your keys
Click Generate New Keys to produce a fresh batch of cryptographically secure keys. Use the one-click copy button next to any key to place it on your clipboard. Keys are generated entirely in your browser using the Web Crypto API and are never transmitted to a server.
Common Use Cases
REST API Authentication
JWT Signing Secrets
Webhook Verification
Database Encryption Keys
Why Use Random Key Generator?
A random key generator creates cryptographically secure strings used for API authentication, encryption, token signing, and webhook verification. Unlike simple random-string functions, a proper key generator relies on the operating system's cryptographically secure pseudorandom number generator (CSPRNG) to produce output that is computationally infeasible to predict. FindUtils' Random Key Generator runs entirely in your browser using the Web Crypto API, so your keys are never transmitted over the network.
Choosing the right format and length depends on the task. Hex-encoded keys are the standard for AES encryption because each pair of hex digits maps neatly to one byte. Base64 packs more entropy per character, making it ideal for JWT signing secrets and compact tokens. Alphanumeric keys avoid special characters, which simplifies storage in environment files and URL query strings. If human readability matters, Base58 drops ambiguous characters (0, O, I, l) to reduce transcription errors. For hashing and integrity checks, pair your keys with a HMAC generator or verify output with a SHA-256 hash generator.
Key management is just as important as key generation. Store secrets in a dedicated vault or your platform's environment variable system, never in version control. Rotate keys on a schedule and audit usage logs for anomalies. If you also need strong user-facing credentials, try the password generator. For unique identifiers that do not require secrecy, a UUID generator is a lighter alternative. When you need to encode binary data for transport, the Base64 encoder converts raw bytes into a safe ASCII representation.
How It Compares
Dedicated key generators and general-purpose password generators solve different problems. A password generator optimizes for human memorability and policy compliance (uppercase, symbols, minimum length), while a key generator maximizes raw entropy per character and outputs machine-readable formats like hex or Base64. If your goal is authenticating an API or signing a JWT, a key generator gives you exactly the right format without post-processing.
Online key generators also differ from command-line tools such as openssl rand or head -c 32 /dev/urandom | base64. The FindUtils generator provides instant visual output, one-click copy, batch generation, and optional prefixes, all without installing software or memorizing flags. Because it runs client-side with the Web Crypto API, it matches the same cryptographic strength as OpenSSL's CSPRNG while being accessible to developers who may not have terminal access on every machine.