What is Base64 encoding?
Base64 is an encoding system that converts binary data into ASCII text using 64 different characters (A-Z, a-z, 0-9, +, /). It's widely used in web development, email systems, and data transmission. Learn more about Base64 on Wikipedia.
How to use the Base64 encoder/decoder?
- Paste or type your text in the input area
- Click 'Encode to Base64' to convert text to Base64 format
- Use 'Decode Base64' to convert Base64 back to readable text
- Copy the result using the copy button
Common use cases for Base64
- Encode images in CSS/HTML using data URIs
- Send binary data in JSON or XML formats
- Transmit email attachments (MIME encoding)
- Store credentials or tokens in configuration files
- Obfuscate text (not encryption, just encoding)
Frequently Asked Questions
No, Base64 is not encryption. It's an encoding method that can be easily reversed. Never use Base64 to protect sensitive data.
Base64 encoding increases data size by approximately 33% because it represents 3 bytes of binary data using 4 ASCII characters.
Yes! All encoding and decoding happens 100% in your browser. Your data never leaves your device.