About Base64 Encoding/Decoding
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used when there is a need to encode binary data that needs to be stored and transferred over media designed to deal with text.
Common Uses of Base64
- Encoding images for embedding in HTML or CSS
- Encoding binary files for email attachments
- Storing complex data in JSON or XML
- Basic obfuscation of data (not encryption)
- URL encoding for web applications
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Base64 Encoding Explained
Base64 encoding works by dividing the input bytes into groups of 3 bytes (24 bits) and then representing each 24-bit group as four 6-bit Base64 digits. Each 6-bit digit is mapped to one of 64 characters (A-Z, a-z, 0-9, '+', '/') with '=' used for padding.
Developer Tip: When using Base64 in URLs, replace '+' with '-' and '/' with '_' to avoid URL encoding issues.