What is the difference between Fast Trim and Precise Trim?

Fast Trim (Stream-Copy) cuts video without re-encoding, completing almost instantly with zero quality loss. Precise Trim re-encodes the video to cut exactly at the exact frame you select.

Is my video uploaded to a server?

No. All trimming is done 100% client-side in your browser's memory. Your video never leaves your device.

Home/Trim Video

Free · runs in your browser · no watermarks

Trim video clips
without losing quality.

Cut unwanted parts from your video or trim clips to exact start and end times. Choose instant stream-copy trimming with zero quality loss or precise frame re-encoding.

Original duration

Trimmed duration

Time cut

Private Local Video Processing: Your videos never leave your device - all trimming runs in your browser’s memory. No server uploads, no watermarks, no sign-up required.

Trim your video

Upload a video file, preview it in the player below, and set your desired start and end times.

Drop a video here, or click to browse

MP4 · WebM · MOV · AVI · MKV

How it works

Upload your video. Supports MP4, WebM, MOV, AVI, and MKV.
Set Start & End points. Play the video preview and click “Set Current” at your desired start and cut positions.
Choose your mode & Trim. Fast Trim completes instantly with no re-encoding, while Precise Trim re-encodes for frame accuracy.

Common questions

What is Fast Trim vs. Precise Trim?

Fast Trim uses stream-copying without re-encoding the video. It takes under 2 seconds and maintains 100% original quality, but cuts at the nearest keyframe. Precise Trim re-encodes the clip for frame-exact cuts.

Why is Fast Trim so fast?

Because it doesn't unpack or re-compress the video data - it simply cuts out the selected chunk of video packets directly from the container file.

Will this add a watermark?

No. FileSwift never adds watermarks or restricts downloads.

Trim video clipswithout losing quality.