🔓 UTF-8 URL 解码URL Decode UTF-8

使用说明与常见问题How-to & FAQ

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

对百分号编码做 decodeURIComponent。本地处理。decodeURIComponent percent-encoded text. Processed locally.

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

在「UTF-8 URL 解码」中，把内容粘贴或输入到上方输入框，结果会实时显示在下方，点击「复制结果」即可复制。例如输入「a%20b」，得到「a b」。In the URL Decode UTF-8: Paste or type into the input box; the result appears below instantly — click "Copy result" to copy it. Example: "a%20b" → "a b".

加号会怎样处理？How are plus signs handled?

+ 会当作空格处理（先换成 %20 再解码），这是表单编码的约定；真正的加号应写成 %2B。编码格式不对（如 %ZZ）时会提示错误。A + is treated as a space (turned into %20 before decoding), following form-encoding convention; a literal plus should be %2B. Malformed input such as %ZZ gives an error.

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

例如在「UTF-8 URL 解码」中输入 a%20b，输出为：a b。For example, the URL Decode UTF-8 turns the input a%20b into: a b.

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 URL 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 URL Decode UTF-8 works fully offline in your browser.

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

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