SYMPTOM:
A wide Report Services document will display on multiple pages when in PDF view event the it was design to display everything on one row/page.
In the following example, four grids are placed horizontally in the Report Services document:

Two of the grids are placed on the next page when viewed in PDF mode, as shown below:

CAUSE:
This behavior is expected because the page settings for the document is set to display at 100% scaling and the object placement has caused the document to be wider than the width of the paper size.
ACTION:
In order to fit all the objects onto the length of one page, there are three options that will force the objects to display as they do in edit mode.
Note: These settings can be accessed through the 'Page setup' window via the 'File' menu, as shown below




In the document below, modifying the scaling to Fit to 1 page wide by 1 page tall caused all the grids to scale down in order to fit to the width of the single page size.
