Video Watermark Tool

Put your logo or another image on a video. Choose the position, size and opacity, then convert to MP4 or WebM. The video is processed on your device.

PNG, JPG or WebP logoPosition, size and opacityMP4 or WebM outputNo upload

Choose a video

or drop it here

The video is processed on this device and never uploaded.

MP4, MOV, WebM, MKV, AVI, WMV, FLV, 3GP, TS / MTS / M2TS or VOB / MPG

Files over 1 GB can be slow. Very large outputs need a browser that can save straight to a file.

Watermark Settings

Watermark Image

Upload Watermark

Choose an image or drop it here

PNG, JPG, WebP, GIF or SVG, up to 10 MB

Output Format

How to use it

1. Choose a video.
2. Add the watermark image, such as a logo in PNG with a transparent background.
3. Pick the position, size and opacity. Drag the image on the preview to fine-tune it.
4. Choose MP4 or WebM and select Add Watermark & Convert.
5. Download the new video. Nothing is uploaded at any step.

How it works

Choose a video, then the image to put on it, usually a logo as a PNG with a transparent background. Pick one of the position presets (corners, top or bottom middle, or a diagonal) or drag the image on the preview, then set its size and opacity. The preview shows the result before anything is encoded.

At 100% the longer side of the image is 30% of the shorter side of the video, so the same setting looks the same on landscape and portrait videos. The size goes from 10% to 300% and the opacity from 0% to 100%.

The video is then re-encoded with the image drawn into every frame, at its original resolution and with its audio kept. The work happens in your browser and neither the video nor the image is uploaded.

Supported files

Inputs: MP4, M4V, MOV, WebM, MKV, AVI, WMV, FLV, 3GP, MPEG-TS and MPEG-PS videos, with a PNG, JPG, WebP, GIF or SVG image of up to 10 MB.
Outputs: MP4 with H.264 video and AAC audio, or WebM with VP9 video and Opus audio.

Limitations

The image is burned into the pixels and cannot be removed from the output later; keep the original video.
Text watermarks are not supported; make the text into an image first.
WebM output needs the browser's WebCodecs VP9 encoder. MP4 output works in every browser, with the slower FFmpeg engine when WebCodecs is missing.

Questions

How do I add a logo to a video?

Choose the video, add the logo image, place it with a preset or by dragging, adjust the size and opacity, then convert and download the MP4 or WebM.

Why does my logo have a white box around it?

The image has no transparency. Save the logo as a PNG or WebP with a transparent background, or lower the opacity so the box is less visible.

Does the site add its own watermark?

No. The only watermark on the output is the image you add.

Are my video and logo uploaded?

No. Both stay on your device; the watermark is applied in your browser.