VidShift

VidShift is a free online video and audio converter that processes files entirely in your browser using WebAssembly and WebCodecs. Your files never leave your device - there are no server uploads, no signups, no watermarks, and no file size limits. Supported video formats include MP4, WebM, MKV, MOV, M4V, MPEG-TS, and OGV. Audio formats include MP3, AAC, WAV, FLAC, and OGG. You can also control output resolution and quality, with bitrate values shown clearly so you know exactly what you're getting. Beyond conversion, VidShift includes a full toolkit: video compressor, trimmer, mute video, rotate and flip, video-to-GIF, MP4-to-MP3 extractor, speed changer, frame extractor, and a bulk batch converter. Because all processing is local, VidShift works offline after the first visit and is suitable for sensitive footage you'd never want uploaded to a third-party server. It's completely free - no premium tier, no hidden costs.