Base64 Encoder
Encode text to Base64 instantly. Free, no signup, runs in your browser.
How It Works
Type or paste any text into the input field and click Encode. The Base64-encoded result appears instantly below. Use the Copy button to copy it to your clipboard.
Everything runs in your browser. No server receives your text — encoding is done using JavaScript on your device.
What Is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as an ASCII string. It is commonly used to embed images in HTML or CSS, transmit data in URLs, encode email attachments, and store binary data in JSON or XML.
Base64 encoding increases the size of the data by approximately 33%, but ensures the data can be safely transmitted through text-based systems without corruption.