Base64 Encoder/Decoder
Encode text or files to Base64 format, or decode Base64 strings back to their original form. All processing happens in your browser.
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How to Use Base64 Encoder/Decoder
1
Choose Mode
Select whether you want to encode or decode
2
Input Your Data
Enter text or upload a file (encoding only)
3
Get Results
Copy or download the encoded/decoded output
Instant Processing
Encode and decode in milliseconds, right in your browser
100% Private
Your data never leaves your browser. Complete privacy guaranteed
File Support
Encode any file type to Base64 format
Common Use Cases
See how Base64 encoding is used in real-world applications
Embedding Images
Embed images directly in HTML or CSS using data URIs
API Authentication
Encode credentials for basic authentication headers
Data Transmission
Safely transmit binary data over text-based protocols
Configuration Files
Store binary data in JSON or XML configuration files
Examples
Common Base64 encoding and decoding examples
Text Encoding
Plain text to Base64
Input: Hello, World! Output: SGVsbG8sIFdvcmxkIQ==
URL Encoding
URLs can be encoded for safe transmission
Input: https://example.com/page?id=123 Output: aHR0cHM6Ly9leGFtcGxlLmNvbS9wYWdlP2lkPTEyMw==
JSON Encoding
JSON data to Base64
Input: {"name":"John","age":30}Output: eyJuYW1lIjoiSm9obiIsImFnZSI6MzB9Basic Auth Header
Username:password format
Input: username:password Output: dXNlcm5hbWU6cGFzc3dvcmQ= Usage: Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
Frequently Asked Questions