Add Watermark to Video Online Free Without Uploading
Add logo watermarks, text watermarks, or picture-in-picture overlays to your videos. No upload, no watermark on output, completely free.
Short answer: Yes—use NanoPix Overlay. Upload your video and your watermark image or video, position it on the frame, set opacity, and export. No upload to any server, completely free.
How to add a watermark in 3 steps
- Open Overlay and import your main video (MP4, MOV, MKV, WebM, AVI supported).
- Import your watermark as an overlay source—either an image (PNG with transparency works best) or a video file.
- Set position (x/y coordinates), scale (size relative to source), and opacity (transparency level). Click Export.
Watermark positioning guide
| Position | Coordinates (relative) | Best for |
|---|---|---|
| Top-left corner | x: 20, y: 20 | Less intrusive placement |
| Top-right corner | x: (width - watermark_w - 20), y: 20 | Standard logo placement |
| Bottom-right | x: (width - watermark_w - 20), y: (height - watermark_h - 20) | TV broadcast style |
| Bottom-left | x: 20, y: (height - watermark_h - 20) | Subtle, less common |
| Center | Centered x, centered y | Full watermark or semi-transparent brand |
Settings reference
| Control | Range | Effect |
|---|---|---|
| Opacity | 0–100% | Lower values = more transparent. 30–50% is typical for watermarks |
| Scale | 10–200% | Percentage of original watermark size. 15–25% is typical for logos |
| Position X | 0 to max width | Pixel position from left edge |
| Position Y | 0 to max height | Pixel position from top edge |
Overlay source types
| Source type | Best for | Notes |
|---|---|---|
| PNG image (with transparency) | Logos, brand watermarks | Transparent background blends seamlessly |
| JPEG image | Watermarks, solid logos | Solid background may need opacity adjustment |
| Video file | Picture-in-picture, second camera angle | PiP videos, webcam overlays |
Practical use cases
- Brand protection — add your company logo to demo and promotional videos
- Content ownership — copyright watermark on original content
- Tutorial PiP — show presenter webcam over screen recording
- Channel branding — consistent logo placement across all videos
- Preview watermarks — semi-transparent overlay on preview versions
FAQ
Can I add a PNG logo as a watermark?
Yes. Upload your PNG file (preferably with transparency/alpha channel) and position it anywhere on the video frame. Adjust opacity for a professional, semi-transparent look.
Will the watermark be permanently embedded?
Yes. The watermark is composited into the video frames during export. It cannot be removed afterward—it becomes a permanent part of the video. This is the purpose of watermarking.
Can I add text as a watermark?
NanoPix currently supports image and video overlays. To add a text watermark, create an image containing your text (using any image editor) and import that image as the overlay source.
Does NanoPix add its own watermark?
No. NanoPix does not add any watermark to your exported video. Only the watermark you intentionally add will appear in the output.
Can I add multiple watermark layers?
NanoPix currently supports one overlay layer at a time. For multiple watermarks, combine them into a single image first, then add as one overlay.
Is it safe to add overlays online?
Yes. All processing runs locally in your browser. Your files never leave your device.