Base64 Encode
Encode text to Base64 format for safe transmission
Text Input
Base64 Output
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be transmitted over media designed to deal with textual data.
Base64 encoding converts binary data into a set of 64 characters: A-Z, a-z, 0-9, +, and /. This makes it safe for transmission over text-based protocols like email and HTTP.
Common Use Cases
Email Attachments
Email systems use Base64 to encode binary attachments for safe transmission over text-based protocols.
Data URLs
Embed images and files directly in HTML/CSS using data: URLs with Base64 encoding.
API Authentication
HTTP Basic Authentication uses Base64 to encode username:password credentials.
JSON Web Tokens
JWT tokens use Base64 URL-safe encoding for header and payload sections.
How Base64 Works
Base64 encoding works by taking binary data and converting it into a radix-64 representation:
Input text is converted to binary representation
Binary data is grouped into 6-bit chunks
Each 6-bit chunk is mapped to a Base64 character
Padding characters (=) are added if needed
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