Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings online. Free, instant, and private.

Plain Text

Base64

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII format. It's commonly used to embed images in HTML/CSS, encode API credentials, and transmit data in URLs or JSON.

Common Use Cases

Encoding images for inline CSS/HTML (data URIs)
Encoding API keys and tokens for HTTP headers
Encoding binary data for JSON payloads
Email attachments (MIME encoding)