To ensure that web tests always run on a browser window of a specific size you may use different techniques.
The standard PDF reports in Spira and KronoDesk uses a dynamic table layout, so all of the cells take a general width that is based on the number of columns and the width of the page. A customer wanted to be able to modify the widths to make certain columns larger or smaller (e.g. make the ID field smaller than the name). This article explains the process to do this.