Add an external image to a Power BI paginated report (Power BI Report Builder)
APPLIES TO: 
Power BI Report Builder 
Power BI Desktop
When you include external images in your Power BI paginated report, you must verify that the image exists and that it can be accessed over the internet without requiring authentication.
Add an external image
In report design view, on the Insert tab, select Image.
On the design surface, select and then drag a box to the desired size of the image.
On the General tab of the Image Properties dialog box, type a name in the Name text box or accept the default.
(Optional) In the Tooltip text box, type text to display when the user hovers over the image in a report rendered for HTML.
In Select the image source, select External.
Provide URL to external image in provided text box.
(Optional) Select Size, Visibility, Action, or Border to set additional properties for the image report item.
Select OK.