Base64 Encoder Decoder: What is Base64 and How to Use It
Base64 converts binary data into ASCII text, widely used in data transmission and storage.
What is Base64?
Base64 uses 64 printable characters (A-Z, a-z, 0-9, +, /) to represent binary data. Encoded data is about 33% larger than the original.
Common Use Cases
Email Attachments: SMTP only supports 7-bit ASCII, Base64 enables binary attachment transmission.
HTTP Basic Auth: Username:password encoded in Base64 for Authorization headers.
Data URIs: Embed small files directly in HTML/CSS.
JWT Tokens: JSON Web Tokens use Base64 encoding for payload transmission.