Base64 Encoder and Decoder Online Tool
Quickly encode text to Base64 or decode Base64 strings with our free online tool. Perfect for developers, students, and IT professionals.
What is Base64 Encoding/Decoding?
Overview
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode binary data that needs to be stored and transferred over media that are designed to deal with text.
This encoding helps to ensure that the data remains intact without modification during transport.
Common Applications
- Email attachments via MIME
- Storing complex data in XML
- JSON data encoding
How to Use Our Base64 Encoder/Decoder
- Choose ModeSelect either 'Encode' or 'Decode' mode using the buttons at the top
- Input TextEnter your text in the input field
- ProcessClick the 'Encode Base64' or 'Decode Base64' button
- View ResultView the processed result below
- Copy OutputClick the copy button to copy the result
Important Tips
- Size Increase: Base64 encoding increases data size by ~33%
- Security Note: Base64 is not an encryption method - it provides no security
- Character Padding: Results are always padded to a multiple of 4 characters with '='
- Usage: Best for transmitting binary data over text-based protocols
- Caution: Be careful with Base64 strings from untrusted sources
Key Features & Capabilities
Secure Processing
All processing happens locally in your browser
Easy Copy Function
One-click copying of processed results
Error Detection
Clear error messages for invalid inputs