Fit shrinks any video to hit a size limit (Gmail 25MB, WhatsApp, Discord, Slack) without wrecking the quality. Everything runs on your own computer, so your files are never uploaded anywhere. Drop a clip, pick a target, done. A 350MB 4K video becomes a 23MB share-ready file in one click. Trim with a visual timeline, convert to MP4, hardware-accelerated even on 4K. 100% local, no sign-up.