The 10 best security generators
Generators covering the sensitive surface of any product: strong passwords, API keys, hashes, tokens and signatures. All run in the browser; no data leaves your machine.
- 01 🗝️ Passphrase generator Generate memorable diceware-style passphrases: several random words easy to remember and hard to crack. With real entropy. 100% in your browser.
- 02 💪 Password strength checker Measure how strong your password is: entropy in bits, estimated crack time and an improvement checklist. 100% in your browser, nothing is sent.
- 03 🔐 Password generator Create strong, random passwords instantly. Adjust length, uppercase, numbers and symbols. 100% free and private — no signup, runs in your browser.
- 04 🔢 PIN generator Generate secure 4 to 12-digit PINs for cards, alarms, safes and accounts. 100% free, runs entirely in your browser, no signup required.
- 05 🔑 API key generator Generate random API keys with custom prefix, configurable length and hex or base62 format. Useful for development, testing and production.
- 06 #️⃣ MD5/SHA hash generator Compute MD5, SHA-1, SHA-256 and SHA-512 hashes in your browser. Useful for verifying files, data integrity and signatures. No server.
- 07 🛡️ Bcrypt generator Generate Bcrypt-style password hashes with configurable cost factor. Developer tool, processed in your browser.
- 08 ✍️ HMAC generator Compute HMAC with SHA-1, SHA-256, SHA-384 and SHA-512 in your browser. Useful for signing webhooks, APIs and verifying integrity.
- 09 🌐 CORS Policy Generator Generate secure CORS configurations for APIs: allowed origins, methods, headers, credentials. Avoid common cross-origin security mistakes.
- 10 🛡️ SQL Injection Pattern Generator Generate regex patterns to detect SQL injection attempts in inputs. Perfect for WAFs, form validation and web application security hardening.
Why this category matters
The gap between a secure system and a compromised one usually lives in what gets generated next to the code editor: reused passwords, guessable keys, weak hashes. These tools remove that friction.
How to pick the right generator
- For credentials humans will see, pick generators that balance length and entropy.
- For keys only software reads, prioritize raw entropy (256 bits or more).
- For passwords stored in databases, hash them with Bcrypt and salt.
When to use them
- Onboarding a new environment or admin account.
- Periodic credential rotation in CI/CD.
- Audits where you need to regenerate everything from scratch.