Viko is a free, open source video editor that runs entirely in your browser. Unlike cloud-based editors, it processes everything locally with ffmpeg.wasm - your footage never leaves your device. It offers a frame-precise multi-track timeline with keyframe animation, color grading, chroma key, and captions, and fully offline MP4 export. No downloads, no accounts, no subscriptions, no watermarks. Projects and media stay in IndexedDB, making Viko the privacy-first choice for creators.