Base64 Encoder / Decoder

What Is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a base-64 representation. It is commonly used to transmit binary data over text-based protocols such as HTTP, email (MIME), and JSON. When you need to include images, files, or other binary data in a JSON payload or URL parameter, Base64 encoding ensures the data remains intact without corruption during transmission.

Our Base64 Encoder and Decoder tool supports both encoding and decoding operations. You can convert plain text or binary data to Base64 format, or decode Base64 strings back to their original form. The tool works entirely in your browser, so no data is ever sent to a server, keeping your sensitive information private and secure.

How to Use the Base64 Tool

Switch between the "Encode" and "Decode" tabs depending on what you need. To encode, type or paste your text into the input field and click "Encode". The tool converts your text to a Base64-encoded string. To decode, paste a Base64 string and click "Decode" to retrieve the original text. The output can be copied to your clipboard or downloaded as a file.

Base64 encoding is commonly used for embedding images in CSS or HTML, storing binary data in databases, transmitting files in API requests, and encoding authentication credentials in HTTP Basic Authentication headers. While Base64 increases data size by approximately 33%, it guarantees safe transmission across any text-based system.