# Watermark

Scaleflex DMO (Optimization) can place a watermark on top of your images if you want to protect them from copying or tag them with a serial number or custom text. 

<figure><img src="/files/Ibh1ECoDy7qN64GrHVrX" alt=""><figcaption></figcaption></figure>

There are two types of watermarks:

1. **Static watermark:** Apply the same image watermark to all the images you decide to watermark (e.g. your company's logo)
2. **Dynamic watermark:** Specify the watermark in the Scaleflex DMO URL to apply different watermarks to different images.

To activate the watermark function, you need to include the **wat=1** parameter.

#### Available parameters <a href="#available-parameters" id="available-parameters"></a>

| Parameter                                               | Syntax                                                                         | Description                                                                                                          |
| ------------------------------------------------------- | ------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------- |
| use watermark                                           | **wat=1**                                                                      | **(required)** Activates the watermark function                                                                      |
| watermark gravity                                       | **wat\_gravity=X** `X=[north\|south][east\|west]\|center\| absolute\|relative` | Defines the position to "anchor" the watermark to                                                                    |
| watermark scaling (relative to original watermark size) | **wat\_scale=X** `X=0..100`                                                    | Watermark image scaling defined in in percent of the watermark dimensions                                            |
| watermark scaling (relative to output image size)       | **wat\_scale=Xp** `X=0..100p`                                                  | Watermark image scaling defined in in percent of the output image dimensions                                         |
| watermark padding                                       | **wat\_pad=X\[p]\[,Y\[p]]** `X/Y=0..100[p]`                                    | Adds padding from the anchoring point in pixels (**X**) or in percent (**Xp**)                                       |
| watermark positon                                       | **wat\_pos=X\[,Y]**                                                            | sets the position in percent from the resized image; works only with wat\_gravity=absolute and wat\_gravity=relative |
| watermark opacity                                       | **wat\_opacity=X** `X=0..1`                                                    | Defines watermark opacity                                                                                            |

Example: //your-token.cloudimg.io/original\_image\_url/image.jpg?**wat=1\&wat\_gravity=north\&wat\_text=A%20VERY%20LONG%20TEXT%20WHICH%20WON%27T%20FIT\&wat\_pad=10\&wat\_font=Arial-Black\&wat\_fontsize=20max\&wat\_color=000**

Please note that the watermark cannot be larger than the image - if larger, it is always scaled down first to match the image dimensions.


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