Subscription tier limits
Up to 953.7 MB
Batch: 1 file
Up to 9.31 GB
Batch: 5 files
Up to 93.13 GB (streamed)
Batch: 50 files
Pro + Media streams output directly to disk via the File System Access API — no upper file-size limit, no RAM ceiling.
Drop your video and pick a start + end time
JAD seeks to the nearest keyframe and stream-copies the slice
Download the trimmed file at original quality
0 bytes uploaded. Lossless Video Trimmer runs entirely in your browser using WebCodecs, WebGPU, and FFmpeg.wasm. Pro + Media uses chunked streaming via the File System Access API — your video is never buffered to RAM in full and never leaves your machine.
No. Stream-copy mode (-c copy) reuses the original encoded bytes — there is zero quality loss and the export takes seconds even on multi-GB files.
Frame-accurate cuts require a re-encode at the cut point. Toggle 'Frame accurate' in options if needed; otherwise cuts snap to the nearest keyframe (typically every 1–5 seconds).
Concatenate MP4, MOV, MKV, and WebM clips locally. Same-codec inputs use stream-copy for instant lossless joining; mixed-codec inputs are re-encoded.
Open toolAdjust playback speed from 0.25× to 4× with audio time-stretching to preserve pitch. Hardware re-encoding for smooth output.
Open tool