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#️⃣ Unicode 转十六进制Convert Unicode to Hex
把 UTF-8 字节写成十六进制（或改为按码位）。本地处理。可设置「模式」、「大写」、「码位加 U+ 前缀（补足 4 位）」。Write UTF-8 bytes as hex (or switch to code points). Processed locally. Settings: Mode, Uppercase, U+ prefix for code points (4-digit padded).
使用说明与常见问题How-to & FAQ
「Unicode 转十六进制」是什么？What is the Convert Unicode to Hex tool?
把 UTF-8 字节写成十六进制（或改为按码位）。本地处理。可设置「模式」、「大写」、「码位加 U+ 前缀（补足 4 位）」。Write UTF-8 bytes as hex (or switch to code points). Processed locally. Settings: Mode, Uppercase, U+ prefix for code points (4-digit padded).
如何使用「Unicode 转十六进制」？How do I use the Convert Unicode to Hex tool?
在「Unicode 转十六进制」中，把内容粘贴或输入到上方输入框，按需设置「模式」，结果会实时显示在下方，点击「复制结果」即可复制。In the Convert Unicode to Hex: Paste or type into the input box, adjust "Mode"; the result appears below instantly — click "Copy result" to copy it.
大写？Uppercase?
默认小写；勾选“大写”改为大写输出。Lowercase by default; tick Uppercase for capitals.
码位模式里 U+0000 怎么写？How is U+0000 written in code-point mode?
默认只写十六进制数字（U+0000 写成 0，U+0041 写成 41）；勾选“码位加 U+ 前缀”后写成 U+0000、U+0041 这样的标准形式，不足 4 位补 0。By default only the hex digits are written, so U+0000 is 0 and U+0041 is 41. Tick U+ prefix for code points to get the standard form U+0000, U+0041, padded to 4 digits.
输入和输出是什么样的？What does the input and output look like?
例如在「Unicode 转十六进制」中输入 A，「模式」设为 UTF-8 字节，输出为：41。For example, the Convert Unicode to Hex turns the input A, "Mode" set to UTF-8 bytes into: 41.
有哪些选项可以调整？What options can I adjust?
「Unicode 转十六进制」的设置：「模式」可选 UTF-8 字节、码位（默认 UTF-8 字节）；可勾选：「大写」、「码位加 U+ 前缀（补足 4 位）」。每次生成结果都按当前设置处理。Settings in the Convert Unicode to Hex — "Mode": UTF-8 bytes, Code points (default UTF-8 bytes); tick boxes: "Uppercase", "U+ prefix for code points (4-digit padded)". The result always uses the current settings.
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。「Unicode 转十六进制」的处理全部在本地完成。No. Encoding (Base64, URL…) is reversible by anyone; encryption needs a key. The Convert Unicode to Hex works fully offline in your browser.
「Unicode 转十六进制」免费吗？需要注册吗？Is the Convert Unicode to Hex free? Do I need an account?
「Unicode 转十六进制」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 Convert Unicode to Hex is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.