UseTool

100% LOCAL · LOSSLESS

Split a video. No quality loss.

Choose half, thirds, quarters or place your own cut marks. Nothing is uploaded and nothing is re-encoded.

Drop your video hereorMP4, MOV, WebM, MKV and MPEG-TS — when the contained codecs can be copied safely
✓ This device is ready.The container and codecs inside each file are checked on this device after selection.

🔒 Your videos never leave your device.

Split a video without uploading it

The encoded picture and sound are copied directly into separate files. Because the video is not re-encoded, it stays just as sharp as the original and the process is fast.

Choose simple parts or exact cut marks

Halve a video, create thirds or quarters, or preview a frame and place your own cuts. Every requested cut snaps to the nearest safe keyframe and the actual time is shown before processing.

Formats and privacy

UseTool checks MP4, MOV, WebM, MKV and MPEG-TS files locally. Support depends on the codecs inside the file and is verified on the current phone or browser. Your video is never uploaded.

How it works

How it works

  1. 1

    Add what goes in

    Drop your MP4, M4V, MOV, WebM and 6 more formats here, or pick it from your device.

  2. 2

    Start it

    Set the cut points, then start. Everything runs in this browser — no upload, no queue, no account.

  3. 3

    Take the result

    The MP4 · WebM is ready the moment the run finishes. Save it straight to your device.

What this tool does

Split Video
Cuts one video into parts at points you set. Where the container allows it, the packets are copied instead of re-encoded — the parts then keep the original quality exactly.

When you need this

Supported formats

MP4, MOV, WebM, MKV and MPEG-TS — when the contained codecs can be copied safely

Good to know

Frequently asked questions

Do the parts lose quality?

No. The picture data is copied across unchanged, not re-encoded, so every part looks exactly like the original.

Can I cut at an exact second?

The cut snaps to the nearest safe video frame, which can be a fraction of a second away. That is what keeps the split lossless; cutting anywhere else would mean re-encoding.

What files can I use here?

Reads MP4, M4V, MOV, WebM and 6 more formats. One file at a time.

What do I get back?

You get MP4 · WebM.

Does the file lose quality?

The existing video and audio packets are copied into the new container whenever it accepts them — no re-encoding, no loss, and much faster. Where the container refuses them, they are rebuilt.

When does it not work?

Which video codecs work depends on your browser. Chrome and Edge read the most, including H.265 on many machines; Safari and Firefox refuse some. A file that will not open here usually opens in Chrome.

Does the video lose quality?

Only when it has to be re-encoded. Cutting, joining and removing the sound track copy the picture data unchanged, so those are lossless. Compressing and adding a watermark do re-encode, which is why they take longer.

How long may a video be?

There is no fixed limit. What decides is the memory of your device: a phone manages a few minutes comfortably, a computer handles far more. If a long video fails, splitting it first and working on the parts usually helps.

Private by design

Your files stay on your device

Your videos never leave your device.

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Ready-made

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