UseTool

100% LOCAL · LOSSLESS

Join videos. No quality loss.

Add videos, drag them into order and merge them locally in your browser.

Drop two or more videos 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.

Merge videos without uploading them

Add your clips, drag them into the right order and join them directly on your device. Matching clips are copied without re-encoding.

Automatic compatibility when clips differ

If H.264 profiles, resolutions or frame rates differ, UseTool can align them locally at high quality and then merge them. The tool clearly tells you when this one-time re-encoding is needed.

Works on phones and desktop browsers

The tool verifies the actual container and codecs on the current device. MP4, MOV, WebM, MKV and MPEG-TS are supported when their tracks can be copied safely. No video data is sent to a server.