Base64 Encoder / Decoder
Encode and decode Base64 strings — instantly.
How to Use Base64 Encoder/Decoder
To encode, type or paste text in the top field and click "Encode". The Base64 result appears below. To decode, paste a Base64 string in the bottom field and click "Decode". The original text appears in the top field. Supports Unicode text through UTF-8 encoding.
What Is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It's commonly used to embed images in CSS/HTML, transmit data in URLs and APIs, store binary data in JSON or XML, and handle email attachments (MIME encoding).
Is This Tool Free?
Completely free. Encoding and decoding happen in your browser using native JavaScript functions. No data leaves your device.