Base64 Encode/Decode
Encode plain text to Base64 or decode Base64 text.
Runs in your browser · no upload
Base64 converter
Encode plain text or decode valid Base64 text.
Questions
Does this Base64 tool upload my text?
No. Encoding and decoding happen directly in your browser.
Can it handle Unicode text?
Yes. The encoder preserves Unicode text such as accented letters and symbols.
What happens with invalid Base64?
The tool shows a clear error and does not produce misleading output.