Base64 Encoder / Decoder

Free Online Base64 Encoder/Decoder

Instantly encode text to Base64 or decode Base64 strings back to plain text. Base64 encoding is commonly used for encoding binary data in text-based formats like JSON, XML, or email attachments.

Decoding a string that starts with H4sI? It may contain compressed bytes. Use the GZip Base64 decoder to decompress it, or follow the worked Base64 GZip example.