Understanding Base64: How Binary Becomes Printable Text
Computer systems frequently need to transfer binary assets (such as PNG images, cryptographic keys, or PDF documents) across protocols engineered specifically for text (such as SMTP email or HTTP headers). In raw binary, characters like null bytes or control characters can corrupt the transmission.
Base64 solves this by converting 24 bits of input into four 6-bit chunks, where each 6-bit integer indexes into a 64-character alphabet table.
