Base64 Encode / Decode

Base64 encodes binary data as text - common in data URIs, JWT payloads, email attachments, and API tutorials. Encode files or strings to Base64, or decode back to readable text and downloads, without sending content to a server. Developers use this daily for debugging tokens, embedding small icons in CSS, and verifying what a transport layer actually delivered. Keep secrets out of shared screenshots; rotate credentials if exposed. All operations run locally, which is critical when handling session tokens or proprietary file samples.