Turns audio, video, font and other binary files into Base64 data URIs with the matching snippet — <audio>/<video> elements, @font-face, or a download link — and reports the size overhead; the real type is sniffed from magic numbers (MP3, WAV, OGG, FLAC, MP4/M4A, WebM, WOFF/WOFF2/TTF/OTF, WASM …) with the extension as fallback. Paste a data URI to decode it: declared and detected types are compared, text payloads are shown in full and binaries as a hex head; audio and video previews play inline. Everything runs locally.