This web-app helps you to crop WEBM files online without any editing knowledge. You can just drag and drop a movie file to our web-based app, choose the desired dimension (16:9, 4:3, 1:1 etc.), and crop the area you need, and then save the edited WEBM file. You can also save it in another format if you need. It will take no longer than 30 seconds for you to do that.