Go to the page of the template you want to use. Then, in the Header menu, click on the blue upload button.
Select the desired image on your computer and then click on Open.
The allowed file formats are JPEG, PNG and GIF. We recommend JPEG or PNG.
Once uploaded, your logo will appear on your invoice header. You can adjust its size with the horizontal selector.
If you have a proxy account, the logo is applied to the selected entity from the My Invoice Templates page, along with the other layout settings.