HelperCrate

Video Merger

Combine multiple videos into one file. Downloads ~30 MB engine on first run.

Your files never leave your device. Everything runs in your browser.

Related tools

Video Trimmer

Cut any clip down to just the part you want — no upload, no watermark.

Video Compressor

Shrink video files up to 80% by re-encoding at a lower bitrate and resolution.

Video Speed Changer

Speed up or slow down a video, keeping the pitch of the audio intact.

Video Rotator

Rotate or flip a video 90°, 180° or 270° — great for fixing sideways phone clips.