What this tool does
Base64 is an encoding that represents binary data as ASCII characters, not encryption. The tool first uses TextEncoder to convert the text into UTF-8 bytes, and then performs Base64 encoding, so there is no direct btoa(text) restriction on Unicode.
- The encoding results can be safely copied as plain ASCII text.
- Base64 typically increases data size by about a third.
- Encoding does not provide confidentiality and sensitive content should remain protected as is.
How to use it
- Enter any UTF-8 text.
- Click "Base64 Encoding".
- Verify the resulting Base64 string.
- Click "Copy" to save the results.
Common uses
- Represents a short snippet of text in JSON or configuration.
- Test Basic data encoding and message content.
- Confirm UTF-8 byte encoding results for multilingual text.
Base64 Encode Features
Encode UTF-8 text to Base64, correctly supporting Chinese, Japanese and emoji. It is suitable for daily development, debugging, data sorting and code optimization scenarios. The processing results can be directly viewed, copied or downloaded.
FAQ
Is Base64 encryption?
No. Anyone can decode Base64, it only changes the representation and provides no cryptographic protection.
Why can Chinese be encoded normally?
The tool explicitly converts Unicode text to UTF-8 bytes first and then encodes the bytes to Base64.
Will emoji be lost?
No. As long as the browser supports the standard TextEncoder, the UTF-8 bytes of emoji will be intact.