API Key Generator
Generate secure API keys and tokens online for free. Customize format and length.
このツールについて
Generate cryptographically secure API keys in various formats — hex, base64, alphanumeric. Perfect for seeding application secrets and API credentials.
使い方
Choose Format
Select key format and length.
Generate
Click Generate to create a secure API key.
Copy
Copy the key to use in your application.
活用シーン
App Secrets
Generate API keys for application authentication and service integrations.
よくある質問
Are keys cryptographically secure?
Yes. Keys are generated using crypto.getRandomValues() — the same API browsers use for TLS.