Base64 Encoder/Decoder
Privacy-focused encoding and decoding tool
All processing happens in your browser | No data sent to servers | 100% Private & Secure
Privacy Notice: This tool processes all data locally in your browser using JavaScript. Your sensitive data never leaves your device and is not sent to any server.
Encode to Base64
Character count: 0
Maximum recommended size: 10MB
Decode from Base64
Character count: 0
Maximum recommended size: 10MB
About Base64 Encoding
What is Base64?
Base64 is an encoding scheme that converts binary data into ASCII text format. It's commonly used to encode data that needs to be stored or transferred over media designed to handle text. Base64 is NOT encryption - it's just encoding.
Common Uses:
- Encoding email attachments
- Embedding images in HTML/CSS
- Storing complex data in URLs
- Transferring binary data over text-based protocols
- Encoding authentication tokens
Why This Tool is Safe:
- Client-Side Processing: All encoding/decoding happens in your browser
- No Server Communication: Your data never leaves your device
- No Logging: Nothing is stored or tracked
- Open Source: The code is transparent and verifiable
- Works Offline: Can be used without internet connection
Important Notes:
- Base64 is NOT encryption - it can be easily decoded
- Don't use it to "secure" sensitive data - use proper encryption
- Base64 increases data size by approximately 33%
Quick Examples
Example 1: Simple Text
Original:
Hello, World!
Base64:
SGVsbG8sIFdvcmxkIQ==
Example 2: JSON Data
Original:
{"name":"John","age":30}
Base64:
eyJuYW1lIjoiSm9obiIsImFnZSI6MzB9