Guide · 3 steps

How to Add a Watermark to a Video Online

Put your name, @handle or logo on MP4, MOV, MKV and other videos and download the result. No editing software needed.

Watermark your videos Jump to the steps

No account needed to start
Up to 5,000 files per edit
Updated Oct 13, 2026

Wedding films · 24 files Apply to all

Jane Rivers MP4 · 0:42

first-dance.mp4

Jane Rivers MOV · 1:10

lake.mov

Jane Rivers MP4 · 2:05

coast.mp4

Jane Rivers MKV · 0:58

skyline.mkv

Jane Rivers MP4 · 0:31

falls.mp4

Jane Rivers MOV · 1:24

road-trip.mov

Applying… 16 of 24

A video is easy to download and repost without credit. A watermark puts your name on the frames themselves, so it travels with the file. Watermark.ws processes the video on our servers: upload it, place the watermark, and download the finished file. The free and Premium plans process the first 30 seconds of each video; Ultimate processes full-length videos up to 4 hours.

How to Watermark a Video in 3 Steps

Protect your videos without any editing software.

Step 1: Upload Your Video

Drag the video onto the page, or pick it from your device, Google Drive, Dropbox or another service. Videos can be up to 2 GB.
Step 2: Add Your Watermark

Choose Text, Logo or Signature, place it on the frame, and set the size and opacity. The preview shows how it sits on the video.
Step 3: Process and Download

Press Apply, then Finish. The video is re-encoded with the watermark on our servers; download it when it is ready.

Your Videos Deserve Protection Too Add your watermark to a video without installing an editor.

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What you can do

Burned into the Frames

The watermark becomes part of the picture, so it cannot be switched off like a subtitle track. Ultimate covers the whole video; free and Premium cover the first 30 seconds.

Full Positioning Control

Place the watermark in a corner, along the bottom or across the frame, and set its size and opacity. Crop to 9:16 or 16:9 and resize in the same edit.

Questions people ask

What video formats can I watermark?

MP4, MOV, MKV, WebM, AVI, WMV, FLV, 3GP, MPG and M4V, up to 2 GB each. Videos are re-encoded with the watermark; 3GP comes back as MP4 and WebM as MKV, the others in their own format.

Will the watermark appear on the entire video?

On Ultimate, yes: videos up to 4 hours long are processed in full. The free Basic plan and Premium process the first 30 seconds of each video, which suits short clips and lets you check the result.

Does watermarking change my video quality?

The video is re-encoded with the watermark burned in, so you get a new file rather than the original with an overlay. There is no quality or bitrate setting to choose, and your original upload is not changed.

Can I watermark multiple videos at once?

Yes, on Premium and Ultimate: add several videos to one edit, apply the same watermark to all of them, and download them one by one or as a zip. The free plan processes one file per edit.