Security

Q: Can I use MD5 for passwords?

No. MD5 may still serve as a legacy checksum, but it should not protect passwords. Use bcrypt, scrypt or Argon2 for that.

Q: Does the JWT decoder send the token to the server?

The tool is designed to process locally whenever possible. Still, check the privacy note on the page itself before pasting any secret.

Passwords, hashes, ciphers and link verification.

5 tools

Security tools for quick and sensitive tasks

This category groups utilities commonly used in development, operations and troubleshooting: password generator, hash generator, JWT decoder and classical ciphers for educational and legacy work.

The core idea here is reducing friction without increasing risk. Whenever possible, processing happens locally in the browser to avoid unnecessary exposure of tokens, text and secrets.

Featured tools in this category

Password Generator

Available

Generate strong, secure passwords using the browser crypto API.

Hash Generator

Available

MD5, SHA-1, SHA-256 and more for text and files.

JWT Decoder / Verifier

Available

Decode JWTs and verify HMAC locally without sending tokens or secrets.

Classical Ciphers

Available

Caesar, Vigenère, Atbash and other classical ciphers.

Common tasks in this category

Recurring tasks here include generating strong passwords, calculating SHA-256 or MD5 hashes, inspecting JWT tokens, verifying HMAC signatures and exploring ciphers for learning or legacy maintenance.

How to choose the right tool

Use the password generator when the intent is creating strong credentials, the hash generator for checksums and digest comparisons, and the JWT decoder when you need to inspect claims or verify HMAC locally.