About the Base64 Decoder
The Base64 Decoder strips harmless whitespace, validates the alphabet and reconstructs UTF-8 text. Invalid sequences produce an error rather than misleading replacement content.
How to use the Base64 Decoder
- Paste the Base64 string.
- Decode the validated bytes.
- Copy the recovered text if the UTF-8 output is correct.
Practical tips
- Line wrapping in an encoded value is acceptable.
- Binary file data may not be meaningful when decoded as text.