According to the upload screen, and the Xero help documentation, the logo image size for use on invoices is 400 wide by 120 high.
When I use an image this size then print to PDF, the actual size of the printed logo is smaller. My calculations suggest about 80% smaller.
Have the default image proportions changed since the introduction of the new branding features for sales invoices? If so, the Xero documentation needs to change also.
Alternatively, if Xero has not changed, maybe Adobe Acrobat's 100% view setting does not, in reality, show the document at actual size.
Has anyone else had this issue?