Decode Base64
Base64 shows up in email attachments, data URIs, API tokens and debug dumps. Decoding it restores the original bytes or text instantly.
- Paste the Base64 string (whitespace is tolerated).
- Choose the alphabet if the source uses URL-safe characters.
- Inspect the decoded output, or download it when it is binary.
运行
示例
输入
SGVsbG8sIFdvcmxkIQ==
输出
Hello, World!
以上输出由该工具真实执行产生。
常见问题
Is my data uploaded for "Decode Base64"?
No. The tool runs entirely in your browser — nothing is sent to any server.
Is it free?
Yes — unlimited, no sign-up, no installation.
Which tool does this use?
The Base64 Decoder on 26173, linked at the bottom of this page.