Choose one local video
Load the clip and wait for its preview.
Add Watermark to Video Online
Place text, logos or fixed blur areas on one video. Arrange multiple layers and check the moving preview before exporting MP4. Free, on your device, without an account or extra export watermark.
Video file
No upload size limit. Files stay in this browser.
Watermark layers
Position and size
Drag or resize the selected watermark in the preview.
Upload a video to start watermarking.
Keep this tab open until encoding finishes.
How to watermark a video
Create your layers
Replace the starter DojoClip text, or delete its layer for a logo-only result. Add text, image or blur layers as needed.
Place and size the mark
Select a layer, drag or resize its box, or enter X, Y, width and height. Adjust opacity from 10–100%.
Review and export MP4
Play several moments, then export with the tab open. Open the downloaded file to check picture and sound. Render again after edits.
Text and logos with adjustable placement
Text marks
Add a brand name or handle; adjust color, font size and opacity.
Logo images
Use a transparent PNG or another supported image. Its aspect ratio fits inside the chosen box.
Fixed blur or mosaic
Choose smooth blur or mosaic, a rectangular or rounded box, and effect strength.
Source-sized canvas
The composition uses the source width and height; export re-encodes the video.
Videos and logo images
Video: MP4, MOV, WebM or M4V with supported codecs. Logos: PNG, JPG, WebP or SVG that the browser can render. A transparent image keeps its transparent areas; this tool does not remove a logo’s background.
MP4MOVWebMM4VPNGJPGWebPSVG
Example: brand a 15-second product clip
Add a transparent logo near a corner, then play both bright and dark scenes. Resize or change opacity if it disappears against the picture, and keep it away from the product and captions. Add your handle as a separate text layer if needed. All layers apply at fixed positions for the full clip; there are no start/end or animation controls.
For tracked face coverage, use Blur Faces. For timed dialogue, use Add Subtitles. Browse all free tools.
Video watermark questions
Is this watermark maker free?
Yes. No sign-up or credits are required, and no extra brand stamp is added during export. The result includes the layers left in your composition.
Are the video and logo uploaded?
No. They are read and processed on your device. The page may download code or fonts. Save the MP4 before leaving; there is no cloud project save in this tool.
Are there file-size or duration limits?
There is no fixed input size or duration cap. Browser memory and encoding support still limit what can finish. One video is processed at a time; there is no batch export.
Does the export keep the original quality?
It uses the source width and height, but re-encodes to MP4 at 30 fps. Quality, file size and frame rate may differ from the source. Compatible audio is included; resolution alone does not mean lossless output.
Will the blur box follow a moving face?
No. Blur and mosaic stay in a fixed position for the whole clip. They do not track faces or objects. Check every passage where the subject moves; a box that misses the subject does not hide it.
Does this remove watermarks or prevent copying?
It adds visible layers, not watermark removal or reconstruction of hidden pixels. A logo or text mark identifies your clip but does not stop copying, cropping or reuse.
What browser support is needed?
The browser must decode your media and support local video encoding for MP4. Playback alone does not guarantee export. Large sources, complex logos or unsupported codecs can cause processing to fail.