Free API key generator for secure integrations.
Generate cryptographically secure API keys, secrets, and keys directly in your browser. Customize length and encoding (hex, Base64, URL-safe) for use in APIs, webhooks, JWT secrets, and more.
Strong tokens, zero server logging
This API key generator uses secure randomness from your browser to create high-entropy secrets suitable for authentication and cryptographic use cases. Tokens are never sent to our servers or stored anywhere.
- Generate tokens of any length in bytes.
- Choose between hex, Base64, or URL-safe Base64.
- Optional prefixes for easy environment labeling (e.g.
prod_). - Copy with one click and paste into configs or env vars.
Tip: Never reuse API keys across services. Store them in environment variables or a secrets manager, not in code repositories.
Generate a secure API key
Tokens are generated locally using secure random bytes. Choose your length and encoding, then copy the token into your configuration or secrets manager.
Visible length: 0 characters (32 random bytes).
Prefixes can help distinguish environments or token types without reducing randomness, as long as the random part remains long enough.
Strength: Very strong
Entropy: 256 bits. Excellent for high-value secrets and long-lived keys.
For critical production secrets, record tokens in a secure secrets manager and avoid sharing them in logs, screenshots, or chats.
Security by design
- Max token length (bytes)
- 32+
- Encodings supported
- 1
- Entropy (32-byte token)
- 128+
- Tokens generated (all time)
- 50K+
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How it works
Secure random bytes, formatted for real-world APIs.
The API key generator creates random bytes using secure browser APIs and encodes them into formats commonly used for secrets and keys in modern systems.
1. Choose length & encoding
Set the number of bytes and pick hex, standard Base64, or URL-safe Base64 depending on where your token will be used.
2. Generate your token locally
When you click generate, the token is created directly in your browser using cryptographically secure randomness.
3. Store it as a secret
Copy the token into your environment variables, secrets manager, or CI/CD configuration. Avoid hardcoding it into your source code.
API key best practices
Keep your API keys and secrets safe.
Strong tokens are only one part of the story. How you store and rotate them matters just as much as how they're generated.
Store tokens outside of source control
Never commit API keys or secrets to Git repositories. Use environment variables or a dedicated secrets manager instead.
Use different tokens per environment
Create separate tokens for development, staging, and production, and avoid reusing secrets across services.
Rotate secrets on a schedule
Plan for regular rotation of critical secrets. If a token ever leaks, rotate it immediately and invalidate the old one.
Limit scope and permissions
Use the principle of least privilege. Tokens should only have the minimum permissions they need to do their job.
FAQ
API key generator questions, answered.
Learn how this tool generates tokens and how to safely use them in your applications and infrastructure.
Are API keys generated securely?
Yes. Tokens are created using cryptographically secure randomness provided by your browser's crypto API.
Do you store or log my tokens?
No. Everything is generated locally in your browser. We never see, store, or transmit your tokens.
How long should an API key be?
For most use cases, 32 bytes (256 bits) of randomness is a very strong default. Highly sensitive systems may choose even longer.
Hex vs Base64 vs URL-safe — which should I use?
Hex is simple and widely accepted. Base64 is more compact. URL-safe Base64 is ideal for tokens in URLs, cookies, or places where + and / can cause issues.
API Key Generator
Built for secrets and security
Use this tool to generate secrets for API keys, signing tokens, webhooks, and more — without ever leaving your browser.
Need user-facing credentials instead? Try our password generator or passphrase generator.