Base64 Encoder / Decoder (Browser-Only)

Base64 is a text-safe encoding format used when binary data must travel through systems that only accept plain text. Developers use it for API payloads, data URLs, token transport, and quick binary checks. This page gives you an encode and decode workflow that runs entirely in your browser. You can paste text, load a local file, generate Base64 output, then decode back into text or a downloadable file. Because processing stays on-device, you can use it for sensitive development tasks without relying on third-party upload services. It is also useful when you need predictable conversion during debugging, because you can inspect both input and output in one local workspace and avoid hidden server transformations.