Add a background image to a paginated report (Power BI Report Builder)
APPLIES TO: 
Power BI Report Builder 
Power BI Desktop
You can add a background image to a Power BI paginated report item such as a rectangle, text box, list, matrix, table, and some parts of a chart, or a report section such as the page header, page footer, or report body. You can define a background image for any selected item on the report design surface that displays BackgroundImage in the Properties pane. Like other images, the background image can be a URL to an image on the internet, an image from a dataset field, or an image embedded in the report definition. To use an image embedded in the report, you must first add the image to the report definition before you can add the image to the design surface.
Embed an image in the report definition
In the Report Data pane, right-click the Images node, and then select Add Image.
Note
If the Report Data pane is not visible, on the View tab, select Report Data.
Navigate to the image you want to embed in your report definition, and then select OK.
Add a background image
In report design view, select the report item to which you want to add a background image.
If the Properties pane is not visible, on the View tab, select Properties.
In the Properties pane, expand BackgroundImage, and then do the following:
For an embedded image:
Set Source to Embedded.
Set Value to the name of an image that is embedded in the report.
For an external image:
Set Source to External.
Set Value to a valid path to an image that is available without needing authentication or additional sign-in over the internet. For more information, see Add an External Image (Report Builder and service).
For an image that's contained in a field in the database to which the report item is connected:
Set Source to Database.
Set Value to the name of a field in the report dataset. For more information, see Add a Data-Bound Image (Report Builder and service).
For MIMEType, or file format, select the appropriate MIME type for the image-for example, .bmp.
Note
MIMEType applies only if the Source property is set to Database. If the Source property is set to External or Embedded, the value of MIMEType is ignored.
For BackgroundRepeat, select an expression, Default, Repeat, RepeatX, or RepeatY, or Clip.
For background images in a chart, BackgroundRepeat can be set to Default, Repeat, Fit, and Clip, but not RepeatX or RepeatY.