Base64 Encoder/Decoder
Encode and decode Base64 strings
Plain Text
Base64 Output
About Base64
What is Base64?
Base64 is an encoding scheme that converts binary data into ASCII text format. It's commonly used to encode data for transmission over media designed to handle text.
Common Use Cases
- Embedding images in HTML/CSS
- Email attachments (MIME)
- Data URLs
- API authentication tokens
- Storing binary data in JSON/XML
FAQ
Is Base64 encryption?
No, Base64 is encoding, not encryption. It's easily reversible and provides no security. Don't use it to protect sensitive data.
Why does Base64 increase file size?
Base64 encoding increases data size by approximately 33% because it uses 4 ASCII characters to represent 3 bytes of data.