🔤 UTF-8 解码UTF-8 Decode

使用说明与常见问题How-to & FAQ

「UTF-8 解码」是什么？What is the UTF-8 Decode tool?

百分号编码 / 十六进制字节 / \u 转义 / U+ 码位 → 文本。可设置「格式」。Percent-encoding / hex bytes / \u escapes / U+ code points → text. Settings: Format.

如何使用「UTF-8 解码」？How do I use the UTF-8 Decode tool?

在「UTF-8 解码」中，按需设置「格式」等选项，然后点击「解码」按钮即可。In the UTF-8 Decode: Set "Format", then click "Decode".

用什么规则解码？How is the input decoded?

百分号编码和十六进制字节会先还原成字节，再按 UTF-8 组成文字，字节序列不是合法 UTF-8 时会提示错误。\u、\u{…}、\x 转义和 U+ 码点则直接按码点换成字符，例如 U+0041 是 A、U+4F60 是“你”。Percent-encoding and hex bytes are turned back into bytes and read as UTF-8; byte sequences that are not valid UTF-8 give an error. \u, \u{…} and \x escapes and U+ code points map straight to characters by code point, so U+0041 gives A.

有哪些选项可以调整？What options can I adjust?

「UTF-8 解码」的设置：「格式」可选 百分号 %XX、十六进制、\u 转义、U+ 码位（默认 百分号 %XX）。每次生成结果都按当前设置处理。Settings in the UTF-8 Decode — "Format": Percent, Hex, Escapes, Code points (default Percent). 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。「UTF-8 解码」的处理全部在本地完成。No. Encoding (Base64, URL…) is reversible by anyone; encryption needs a key. The UTF-8 Decode works fully offline in your browser.

「UTF-8 解码」免费吗？需要注册吗？Is the UTF-8 Decode free? Do I need an account?

「UTF-8 解码」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 UTF-8 Decode is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.