Your media. Your machine.
No uploads.
Transcribe, convert, trim, compress and turn clips into GIFs — all in this tab. FFmpeg and Whisper are compiled to WebAssembly and run on your device, so even a 2-hour recording never leaves your laptop. No accounts, no API keys, no server.
100% client-side · 0 trackers · 0 cookies · verify in DevTools → Network
Whisper speech-to-text with timestamps and SRT / VTT export
MP4 · WebM · MP3 · WAV
shrink an MP4 with adjustable quality
cut a clip — keyframe-fast or exact
high-quality two-pass palette GIFs
pull the audio as MP3 / WAV / M4A
How is this possible?
Browsers can now run heavy native tooling via WebAssembly. media0 loads FFmpeg.wasm (multithreaded where your browser is cross-origin isolated) and OpenAI's Whisper through Transformers.js — on WebGPU when available, WebAssembly otherwise. Everything executes locally; open DevTools → Network and watch the silence.