Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings safely in your browser
Text to Base64
Enter text to encode as Base64
0 chars•0 bytes
Common Use Cases
Data URIs: Embed images and files in HTML/CSS
API Keys: Encode credentials for HTTP headers
Email Attachments: MIME encoding for email
Safe Transmission: Send binary data as text
URL Parameters: Encode complex data in URLs
Important Notes
Base64 is encoding, NOT encryption - anyone can decode it
Don't use Base64 for securing sensitive data
Base64 increases data size by approximately 33%
All encoding/decoding happens locally in your browser
Supports Unicode characters and special symbols