Base64 Encode & Decode
Instantly encode text to Base64 or decode Base64 strings in your browser. All processing happens locally—no data is sent to any server.
What is Base64 Encoding?
Base64 is a standardized encoding method that converts binary data into an ASCII text format using 64 characters (A-Z, a-z, 0-9, +, and /). This encoding is essential for transmitting binary data through text-only channels like email, JSON APIs, and HTTP headers.
Key Features:
- Browser-based: All encoding/decoding happens locally in your browser
- Privacy-focused: No data is sent to any server
- Instant processing: Results appear instantly as you type or click
- No file size limits: Limited only by your browser's memory
- Free forever: No registration or subscription required
Common Use Cases:
- Sending binary files via email
- Embedding images in HTML/CSS as data URIs
- Passing sensitive data in URLs
- Storing files in JSON and XML formats
- API authentication tokens and credentials
- Cross-platform data transmission