Base64 Encode and Decode Online

Base64 is a way of representing binary data using only readable ASCII characters. You meet it in email attachments, data URLs and API payloads that must travel safely in plain text.

The base64 encoder and decoder handle both directions: turn any text or small file content into base64, or turn base64 back into the original text.

How to use it

1. Open the encoder or decoder.
2. Paste your content.
3. Encode or decode and copy the result.

What base64 is best for

• Embedding a small image as a data URL.
• Sending binary in a text-only channel.
• Storing a compact blob in JSON.

For images specifically, see base64 to image.