Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text instantly.
How to Use
Enter text
Paste text to encode or Base64 string to decode.
Click encode/decode
Select the operation you need.
Copy result
Copy the converted output.
Features
Frequently Asked Questions
Base64 is a binary-to-text encoding scheme that converts binary data to ASCII text. It's commonly used for email attachments and embedding data in URLs.
Encode and decode Base64 data instantly. Convert text, files, and binary data to and from Base64 format for safe transmission in URLs, emails, and APIs.
Did You Know?
Base64 uses 64 characters (A-Z, a-z, 0-9, +, /) to represent data, which is why it's called 'Base64'. It was designed in the 1980s to safely transmit binary data through systems that only supported text!
Pro Tips
- Base64 increases data size by about 33%
- Use URL-safe Base64 for query parameters (replaces + and /)
- For large files, consider compression before encoding
Common Use Cases
- Embedding images directly in HTML/CSS
- Encoding API authentication credentials
- Transmitting binary data in JSON
- Email attachment encoding (MIME)
- Data URLs for small assets
Best Practices
- Don't use Base64 for encryption - it's encoding, not security
- Remove unnecessary whitespace from Base64 strings
- Validate Base64 input before decoding to prevent errors
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