You need to create a version of your logo in GIF format and smaller than 500×60 pixels. Then follow the steps below:

  1. Rename the logo file to logo.gif
  2. Copy logo.gif under folder “\inetpub\wwwroot\SpreadsheetWEB\App_Themes\SiteTheme\Images” on your SpreadsheetWEB server
  3. Refresh your browser. Your logo will appear on Control Panel and login pages