Base64 is an encoding format, not encryption. It is used to represent binary or plain text data in ASCII-safe form so it can travel through systems that expect text.
Developers see it constantly in HTTP auth headers, data URLs, email payloads, file uploads, and embedded assets. Because it looks opaque at a glance, a fast decoder saves time during debugging.
Base64 在接口调试里的常见配套工具
顺着这个问题继续往下点
The practical workflow is simple: decode when you need to inspect a payload, encode when an API or transport layer expects Base64 input, and avoid treating it as a security feature.