Base64 Encoder/Decoder
Free Online Base64 Converter - Text ↔ Base64
Encode text to Base64 or decode Base64 to text. Use for development, API communication, and data transfer.
🔐 What is Base64?
Base64 is an encoding scheme that represents binary data using 64 ASCII characters. Widely used for email attachments, image Data URLs, and API authentication tokens. Increases data size by about 33%.
📝 How to Use
- Select encode or decode mode
- Enter text to convert
- Click Convert button
- Copy and use the result
💡 Base64 Uses
- API auth: Used in Authorization header
- Data URL: Embed images in HTML/CSS
- Email: Attachment encoding
- JWT tokens: Decode payload
- Note UTF-8 encoding for non-ASCII