Security Tools
Password generator, hash generator, encoders
Check password strength, generate hashes, decode JWT tokens, and encode/decode HTML entities. Our security tools help developers and security-conscious users understand hashing algorithms, verify data integrity, and debug authentication systems. Hashing converts input into a fixed-size string — it's one-way and cannot be reversed. Encoding converts data between formats for safe transmission. All processing happens locally in your browser — no data is sent to any server. Important: these tools are for educational and development use. For password storage, always use dedicated password hashing functions like bcrypt or Argon2.
Password strength checkers help users create more secure accounts by analyzing length, character variety, and common patterns. Hash generators (MD5, SHA-256) demonstrate how one-way hash functions work — useful for data integrity checks, checksums, and understanding cryptographic concepts. JWT decoders let developers inspect token headers and payloads during API debugging — but never paste production tokens with sensitive data. HTML encoders prevent cross-site scripting by converting special characters to safe entities. Random token generators create API keys and session IDs using cryptographically secure random number generation. All tools run in your browser.
Which security tool should I use?
| Need | Tool |
|---|---|
| Check password strength | Password Strength Checker |
| Generate MD5 hash | MD5 Generator |
| Generate SHA-256 hash | SHA-256 Generator |
| Decode a JWT token | JWT Decoder |
| Encode/decode HTML entities | HTML Encoder/Decoder |
| Generate random API key | Random Token Generator |