Base64 vs. Encryption

What Base64 does

Base64 maps byte values to printable text characters. It has no secret key, and its output is reversible by anyone. It can make binary bytes easier to carry in a text-only field, but it does not conceal them.

For example, SGVsbG8sIHdvcmxkIQ== decodes directly to Hello, world!.

What encryption does

Encryption transforms data using a cryptographic algorithm and key so that a party without the required key cannot ordinarily recover the plaintext. Correct encryption also requires appropriate key handling and secure protocol design.

Why the distinction matters

Putting a password or token in Base64 does not make it safe to expose. If a value must remain confidential, use an established secure protocol or cryptographic design rather than treating an encoding as protection.

Some encrypted data is subsequently encoded as Base64 to transport its bytes through a text-oriented format. In that case, encryption provides confidentiality; Base64 is only the representation layer.

Try encoding text

The Base64 Encoder & Decoder operates locally in your browser for UTF-8 text. Its output is encoded, not encrypted.