Base64 to UTF-8 text
The decoder converts the Base64 alphabet back into bytes and then reads those bytes as UTF-8. Formatting whitespace in the encoded input is ignored.
Base64 Decode
Decode standard Base64 into readable UTF-8 text. Invalid Base64 and non-text byte sequences are reported clearly.
Decode workspace
Decode standard Base64 into UTF-8 text.
Base64 input
Decoded text
Your content stays on this device.
Designed for text content
Binary files can also be Base64-encoded, but this tool intentionally reports an error when the decoded bytes are not valid UTF-8 text.
Base64 Decode FAQ
Can the input contain line breaks?
Yes. Spaces, tabs, and line breaks are removed before decoding.
Why does valid Base64 sometimes fail?
The Base64 may represent binary data rather than UTF-8 text. This text-focused decoder rejects those bytes instead of displaying corrupted characters.