🔐 Base64 Encoder / Decoder

Encode and decode Base64 strings in your browser. Supports text and file input. No data leaves your machine.

Text Mode

File Mode

URL-Safe Base64

↓

Standard charsetA-Z a-z 0-9 + / =

URL-safe charsetA-Z a-z 0-9 - _ (no padding)

Size increase~33% larger than original

Common usesData URIs, email, API tokens, JWT