Developer
Base64 Encoder/Decoder
Encode and decode text to Base64 format instantly. Perfect for data encoding.
What Base64 is used for on the web
Base64 is a way to represent binary data using printable ASCII characters, which is useful when a system only handles text. You will see it in data URLs, email attachments, JSON payloads, and some auth tokens. It is encoding, not encryption: anyone can decode Base64 without a secret key.
Use the tool
Practical use on this page
Encode when you need a transport-friendly string for a small file or test vector. Decode when you need to read what a Base64 string contains. If you are debugging API issues, make sure you are not double-encoding, and remember that newlines in copied strings can break decoding.
Do not treat encoding as security
Hiding a password inside Base64 does not protect it. If you are handling real credentials, use proper secret management, TLS in transit, and access controls, not this tool alone.