UUID (Universally Unique Identifier) is a standard format used to uniquely identify information in distributed systems. This tool supports multiple versions, batch generation, and format customization to meet various development, testing, and integration needs.

Online random password generator, supports strong passwords and custom rules.

MD5 converts any message into a fixed 128-bit hash.

Upload an image to generate Base64 code with one click, or paste an existing Base64 string to restore it as an image. Simple and efficient for daily use and development.

When a URL contains spaces, non-ASCII text, or special characters, browsers and servers use URL encoding. This tool helps you view the encoded form or decode strings like %E4%B8%AD%E6%96%87 back into readable text.