这是什么工具？
The URL encoder/decoder converts special characters in a URL to percent-encoding (e.g. space to %20), or decodes an encoded URL back to readable form.
为什么使用？
Useful when building links with non-ASCII or spaces, or when interpreting encoded URLs.
如何使用
Enter a URL or text, then click "Encode" or "Decode". Copy the result for use in links or API calls.
Processing is done only in the browser; input is not sent to the server.