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#️⃣ MD5 哈希（文本 / Base64）MD5 Hash (Text / Base64)
在浏览器本地计算文本的 MD5 哈希（UTF-8），可输出小写、大写和字节空格分隔形式，并比对期望值；也可把输入当作 Base64 解码后再哈希。MD5 不可逆，"解密"只能靠比对或彩虹表，本页不做破解。Compute the MD5 hash of text locally (UTF-8), as lowercase, uppercase or space-separated bytes, and compare with an expected value. Or treat the input as Base64 and hash the decoded bytes. MD5 is not reversible - "decrypt" only means comparing or looking up rainbow tables, which this page does not do.
使用说明与常见问题How-to & FAQ
「MD5 哈希（文本 / Base64）」是什么？What is the MD5 Hash (Text / Base64) tool?
在浏览器本地计算文本的 MD5 哈希（UTF-8），可输出小写、大写和字节空格分隔形式，并比对期望值；也可把输入当作 Base64 解码后再哈希。MD5 不可逆，"解密"只能靠比对或彩虹表，本页不做破解。Compute the MD5 hash of text locally (UTF-8), as lowercase, uppercase or space-separated bytes, and compare with an expected value. Or treat the input as Base64 and hash the decoded bytes. MD5 is not reversible - "decrypt" only means comparing or looking up rainbow tables, which this page does not do.
如何使用「MD5 哈希（文本 / Base64）」？How do I use the MD5 Hash (Text / Base64) tool?
在「MD5 哈希（文本 / Base64）」中，按需设置「比对哈希（可选）」等选项，然后点击「按 Base64 解码后哈希」按钮即可。In the MD5 Hash (Text / Base64): Set "Compare with (optional)", then click "Hash as Base64".
能解密 MD5 吗？Can MD5 be decrypted?
不能。MD5 是单向哈希，只能通过比对已知明文或查询彩虹表猜测原文；本页只做正向哈希和比对，不做破解。No. MD5 is a one-way hash - the only "decrypt" is guessing by comparing known plaintexts or rainbow tables. This page only hashes and compares.
MD5 还安全吗？Is MD5 still safe?
MD5 已不适合做密码或数字签名（存在碰撞攻击），校验文件完整性仍常使用。需要更强请用 SHA-256。MD5 is not suitable for passwords or signatures (collision attacks exist); it is still common for checksums. Prefer SHA-256 for stronger needs.
和"哈希生成器"？vs Hash Generator?
本站的哈希生成器支持多种算法和文件；本页专注 MD5 文本，并提供比对与 Base64 输入。The Hash Generator covers many algorithms and files; this page focuses on MD5 of text with compare and Base64 input.
编码和加密有什么区别？Is encoding the same as encryption?
编码（如 Base64、URL 编码）可直接还原，不提供保密性；加密需要密钥。「MD5 哈希（文本 / Base64）」的处理全部在本地完成。No. Encoding (Base64, URL…) is reversible by anyone; encryption needs a key. The MD5 Hash (Text / Base64) works fully offline in your browser.
「MD5 哈希（文本 / Base64）」免费吗？需要注册吗？Is the MD5 Hash (Text / Base64) free? Do I need an account?
「MD5 哈希（文本 / Base64）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The MD5 Hash (Text / Base64) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.