Base64 Encoder & Decoder
Encode text or files to Base64, decode Base64 strings, and handle URL-safe variants. Everything runs in your browser.
Plain Text / Input
Or drop / click to encode a file as Base64
Base64 Output
Common uses: Decode JWT token payloads (the middle section), encode images for CSS
data: URIs, encode API credentials for Basic Auth headers, or verify what's inside an email attachment header.