Character Encoding Troubleshooting Handbook: Mojibake, URL Encoding, and Base64 Explained

Chinese turning into ??? or é”±? %E4%B8%AD unreadable? This handbook classifies by symptom — real mojibake, URL percent-encoding, Unicode escaping, and Base64 with Chinese, plus an encoding primer and a debugging workflow.

Chinese Turns Into %E4%B8%AD (Percent Encoding) in a URL — Is That Normal?

URL Chinese becomes a string of %XX percent-encoding — is that normal? Why encoding is needed, how it works, how to decode, and how to handle it in front-end, with our URL tool.