Base64 Encode / Decode
Encode text to Base64 or decode a Base64 string back to text.
Worth Knowing
Base64 is often mistaken for encryption, but it's the opposite of secret — it's a reversible encoding that turns arbitrary binary data into plain ASCII text so it can safely travel through systems that only handle text (email attachments, JSON fields, URLs, image data URIs). Anyone can decode it instantly with no key required, which is exactly why it's the wrong tool whenever you actually need confidentiality — use real encryption for that, and reach for Base64 only when the goal is compatibility, not secrecy.
How to Use
- Choose your mode into the Base64 Encode / Decode above.
- Set any additional options: Text.
- The output updates instantly and is ready to copy.