Base64 Encoder & Decoder

Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters (A-Z, a-z, 0-9, + and /). It's commonly used to encode data for transmission over text-based protocols like email or embedding images in HTML/CSS.

URL-safe Base64 replaces the + character with - and / with _ to make the encoded string safe for use in URLs without requiring percent-encoding. This variant is commonly used in JWTs and web applications.

Yes! Drag and drop a file into the file upload area or click to select a file. The tool will convert the entire file contents to Base64, which you can then copy and use in your applications.

No, Base64 is NOT encryption. It's simply an encoding method that represents data in a different format. Anyone can decode Base64 without a key. Never use Base64 alone to protect sensitive data.

Base64 encoding increases data size by approximately 33% because it uses 4 characters to represent every 3 bytes of binary data. This trade-off allows binary data to be safely transmitted over text-based protocols.