The size of the page JPEG Thumbnail in the Preview Pane defaults to 96 pixels in height, but it can be altered by editing the ThumbnailHeight value in the InDesignConfig.xml file which is located, generally, in the fileservers tera\gn4\main\config\global\gn4 folder.

An example of this section of an InDesignConfig.xml file is:

ThumbnailHeight

The height of the thumbnails, if 0 then it is the same size as the page.

default 96.0

-->

<InDesignConfig LinkPing="10000"

ArchivePDFVariantName="PDF_[Press quality]"

PrintPDFName="[Press quality]"

PageCompleteWorkstate="Page Closed"

PrintQueueName="PDF file"

PrintSinglePages="false"

port="5679"

ColourForMissingAdverts="16711935"

SendToNewsroomFolderPath="/Wires"

AutoMarkNonEmptyTextBoxes="true"

KeepAlivePing="120000"

ThumbnailHeight="96.0">

</InDesignConfig>

Note the feature for setting the Thumbnail of the page JPEG to the exact size of the document. The definition details the height of the Thumbnail produced; the width of it will be generated proportionally in the ratio of that of the page itself. The control is only for generated JPEG Thumbnails of the page, it does not control the Thumbnail size of images or PDF’s of extDocs.