vSphere Web Client is displayed within a web browser at a default size of 1024 by 768 pixels (including standard browser chrome). This size accommodates the most common screen resolutions.
The following figure shows the components that make up the UI, and their dimensions. At the default size, the design area for the main content area is 560 x 486 pixels, including scrollbars. Strive to display key information within these dimensions; minimize the need for scrolling.
For details on other windows within vSphere Web Client, see the individual standard: