🔤 生成随机字母Generate Random Alphabet Letters

使用说明与常见问题How-to & FAQ

「生成随机字母」是什么？What is the Generate Random Alphabet Letters tool?

生成随机英文字母串（可设大小写、长度、种子）。本地处理。可设置「长度」、「大小写」、「种子（留空 = 安全随机）」。Generate random English letters (case, length, seed). Processed locally. Settings: Length, Case, Seed (blank = secure random).

如何使用「生成随机字母」？How do I use the Generate Random Alphabet Letters tool?

在「生成随机字母」中，按需设置「长度」、「大小写」、「种子（留空 = 安全随机）」，结果会实时显示在下方，点击「复制结果」即可复制。In the Generate Random Alphabet Letters: Adjust "Length", "Case", "Seed (blank = secure random)"; the result appears below instantly — click "Copy result" to copy it.

只生成英文字母吗？Only Latin letters?

是的，只从 26 个英文字母 A–Z / a–z 中随机选取，可选大写、小写或混合。不含数字、标点和带重音的字母。Yes, only the 26 English letters A–Z / a–z, in upper, lower or mixed case. Digits, punctuation and accented letters are not included.

结果是真随机的吗？「种子」有什么用？Is the output truly random? What does Seed do?

「种子」留空（默认）时，结果用浏览器的 crypto.getRandomValues（密码学安全随机数）生成，每次都不同，每种结果出现的概率相同（偏差小于千万亿分之一）。填写种子后改用确定性的伪随机数生成器（mulberry32）：同一种子总是得到同样的结果，便于复现，但结果可以被预测，不要把带种子的结果用于密码或需要公证的抽奖。With Seed left blank (the default), the output comes from the browser's crypto.getRandomValues (cryptographically secure randomness), so it differs every time and every outcome is equally likely (any bias is below one in a million billion). If you enter a seed, a deterministic pseudo-random generator (mulberry32) is used instead: the same seed always gives the same output, which is handy for reproducing a result, but it is predictable, so do not use seeded output for passwords or audited draws.

输入和输出是什么样的？What does the input and output look like?

例如在「生成随机字母」中把「长度」设为 5，「大小写」设为 仅大写，「种子」设为 1，输出为：VDVTO。For example, in the Generate Random Alphabet Letters with "Length" set to 5, "Case" set to Upper, "Seed" set to 1, the output is: VDVTO.

有哪些选项可以调整？What options can I adjust?

「生成随机字母」的设置：「长度」默认 16；「大小写」可选 大小写混合、仅大写、仅小写（默认 大小写混合）；「种子（留空 = 安全随机）」可留空。每次生成结果都按当前设置处理。Settings in the Generate Random Alphabet Letters — "Length" default 16; "Case": Mixed, Upper, Lower (default Mixed); "Seed (blank = secure random)" optional. The result always uses the current settings.

「生成随机字母」免费吗？需要注册吗？Is the Generate Random Alphabet Letters free? Do I need an account?

「生成随机字母」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 Generate Random Alphabet Letters is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.