输入文本或选择文件，一次算出 MD5、SHA-1、SHA-256、SHA-384、SHA-512 全部哈希值。校验下载文件、比对内容是否被改过，都靠它。文件只在浏览器里读取，不上传。Type text or pick a file to get its MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes at once — for verifying downloads and checking content integrity. Files are read locally and never uploaded.
| MD5 | - | |
| SHA-1 | - | |
| SHA-256 | - | |
| SHA-384 | - | |
| SHA-512 | - |
MD5 和 SHA-1 已不适合做安全签名（存在碰撞攻击），但用来校验文件完整性、做内容指纹仍然够用；需要安全性时请用 SHA-256 及以上。文本按 UTF-8 字节计算，与命令行 sha256sum 对纯 ASCII 文本的结果一致；含中文时注意对方工具的编码设置。MD5 and SHA-1 are no longer safe for signatures (collision attacks exist) but remain fine for integrity checks and content fingerprinting; use SHA-256 or stronger for security. Text is hashed as UTF-8 bytes, matching sha256sum for ASCII text.