Removing thumbnails

A thumbnail is a small image of a PDF page. Acrobat can display thumbnails, allowing the user to navigate to a page by clicking the image.

Thumbnails can be embedded in a document so that they can be displayed quickly when the document is opened. Acrobat generates thumbnails if they are not embedded.

A disadvantage of embedding thumbnails is that they increase the size of the document. For some workflows, such as when archiving documents for long periods of time, reducing file size is more important than display speed. Therefore, the Assembler service provides the capability of removing embedded thumbnails from a document.

To remove thumbnails from a document, you use the NoThumbnails element, as in the following example.

Example: Removing thumbnails

<PDF result="doc3.pdf">

	<NoThumbnails/>

	<PDF source="doc1.pdf" />

	<PDF source="doc2.pdf" />

</PDF>

In the following example, NoThumbnails applies only to one of the source elements. Therefore, only thumbnails in doc1.pdf are removed.

Example: Removing thumbnails from part of a document

<PDF result="doc3.pdf">

	<PDF source="doc1.pdf">

		<NoThumbnails/>

	</PDF>

	<PDF source="doc2.pdf"/>

</PDF>

For more information on scope, see Scope of page elements.

 

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