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编码与加密

Base64 编码 / 解码

免费的 Base64 编码器和解码器。将文本编码为 Base64 或解码回纯文本。完全支持 UTF-8 / Unicode。完全在浏览器中运行。

Runs in your browser

编辑注

Understanding · Bytes, in printable ink.

本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。

常见问题

Quick answers.

Is Base64 encryption?

No — Base64 is encoding, not encryption. Anyone can decode it. Use it for safe transport of binary data through text channels, never for security.

Does it support Unicode?

Yes. Text is encoded as UTF-8 before Base64, so emoji and non-Latin characters round-trip correctly.

Is my input uploaded anywhere?

No. Encoding and decoding happen locally in your browser.

What's the difference between Base64 and Base64URL?

Base64URL replaces + and / with - and _ to be safe in URLs. We support both — toggle in settings.

Is the tool free?

Yes — fully free, no signup.

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