Security Tools — Free Online Utilities
Security and privacy tools to generate strong passwords, hash files, and encrypt text locally. Sensitive input is processed in your browser and never transmitted.
是的。输出使用标准CSS属性，不含厂商前缀，现代浏览器中的Flexbox已不再需要这些前缀。
Encode or decode text using the classic Caesar cipher shift algorithm.
Clean HTML and remove XSS / dangerous code
Store and manage passwords locally in your browser — nothing sent to any server.
Measure password strength in bits of entropy and estimate crack times.
Audit a list of passwords for strength, entropy, common patterns, and get detailed security recommendations for each one.
Generate strong, memorable passphrases from a built-in word list with entropy display.
Generate TOTP 2FA codes from a Base32 secret — no app needed.
粘贴哈希字符串，识别它可能使用的算法。
生成密码学安全的密码，对长度、字符集和数量进行精细控制。
向下滚动查看最长回文子串、逐词结果以及著名示例。
使用维吉尼亚密码加密和解密文本，并探索经典密码学。