Watermark Video
Put your logo on a video at any corner, with a chosen size and opacity.
Free · No upload · 100% on your device
Watermark Video
Choose the video, or drop it here.
MP4, MOV, MKV, WebM, AVI and more · No size or length limit. Nothing is uploaded.
100% on your device
How to use Watermark Video
- Choose your video, or drop it on the page.
- Pick the settings in the side panel.
- Select “Add watermark”. The first use downloads the video engine once.
- Download the result. Your original file is left unchanged.
Private by design. Your files are processed in this browser tab and are never uploaded to KittySuite.
About Watermark Video
Choose the video, then a logo image; a PNG with a transparent background looks best. The logo width is a percentage of the video width, so it stays in proportion on any resolution, and it is placed with a small margin from the edge.
Processing happens in this tab with FFmpeg compiled to WebAssembly; your files are never uploaded. The first video or audio tool you use downloads the 10 MB engine once and keeps it cached for next time. Long or high-resolution videos take longer than on a desktop editor, especially on phones, where files are processed one at a time to stay within memory. Keep the tab open until the download appears.
Watermark Video: frequently asked questions
How do I add my logo to a video?
Choose the video, then a logo image. Pick a corner or the centre, the logo width as a percentage of the video and its opacity.
Which logo file works best?
A PNG with a transparent background. JPG and WebP logos are accepted too.
Will the logo stay the same size on different resolutions?
Yes. Its width is a percentage of the video width, so it stays in proportion.
Can I add a text watermark?
Make an image of the text first, for example with Placeholder Image Generator or Social Image Maker, then use it as the logo.