Add a watermark or logo to a video, in your browser

Put your logo or a text watermark over the video, right in your browser: see a frame of the video, drag the mark wherever you want, adjust its size and transparency. You can use an image (PNG, JPG or WEBP) and/or text. The video keeps the same quality and the audio stays untouched. Everything happens on your device — the video is never sent to any server.