# Dynamic watermark

The dynamic watermark function allows you to specify the watermark image in the Filerobot URL. This way, different watermarks can be used with different images.

## Available parameters

| Parameter                                               | Syntax                                                                                                            | Description                                                                    |       |                   |                                                   |
| ------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------ | ----- | ----------------- | ------------------------------------------------- |
| use watermark                                           | <mark style="color:purple;">**wat=1**</mark>                                                                      | **(required)** Activates the watermark function                                |       |                   |                                                   |
| watermark URL                                           | <mark style="color:purple;">**wat\_url=X**</mark>                                                                 | **(required)** The URL of the watermark image. Can be URL-encoded              |       |                   |                                                   |
| watermark position                                      | <p><mark style="color:purple;"><strong>wat\_gravity=X</strong></mark><br><code>X=\[north                          | south]\[east                                                                   | west] | center</code></p> | Defines the position to "anchor" the watermark to |
| watermark scaling (relative to original watermark size) | <p><mark style="color:purple;"><strong>wat\_scale=X</strong></mark><br><code>X=0..100</code></p>                  | Watermark image scaling defined in in percent of the watermark dimensions      |       |                   |                                                   |
| watermark scaling (relative to output image size)       | <p><mark style="color:purple;"><strong>wat\_scale=Xp</strong></mark><br><code>X=0..100p</code></p>                | Watermark image scaling defined in in percent of the output image dimensions   |       |                   |                                                   |
| watermark padding                                       | <p><mark style="color:purple;"><strong>wat\_pad=X\[p]\[,Y\[p]]</strong></mark><br><code>X/Y=0..100\[p]</code></p> | Adds padding from the anchoring point in pixels (**X**) or in percent (**Xp**) |       |                   |                                                   |
| watermark opacity                                       | <p><mark style="color:purple;"><strong>wat\_opacity=X</strong></mark><br><code>X=0..1</code></p>                  | Defines watermark opacity                                                      |       |                   |                                                   |

## Examples

| Preview                                                                                                                                                                                                             | Syntax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| ![](https://2536208400-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fqsq2dR7Fjagf5eTifWZx%2Fuploads%2FyLiw6LnWvUkPlzSTL3MI%2Fimage.png?alt=media\&token=629b7b83-2d01-46fb-a96f-214fdf5d7510) | [/docs/voyage-louis-vuitton.jpg?<mark style="color:orange;">**w=600**</mark>&<mark style="color:purple;">**wat=1**</mark>&<mark style="color:purple;">**wat\_url=http://sample.li/louis-vuitton-logo-white.png**</mark>&<mark style="color:purple;">**wat\_scale=45**</mark>&<mark style="color:purple;">**wat\_gravity=southeast**</mark>&<mark style="color:purple;">**wat\_pad=15**</mark>](https://fdocs.filerobot.com/docs/voyage-louis-vuitton.jpg?w=600\&wat=1\&wat_url=http://sample.li/louis-vuitton-logo-white.png\&wat_scale=45\&wat_gravity=southeast\&wat_pad=15) |