The Thumbnails tab toolbar provides easy access to the following actions:

 Reduce Thumbnail Size: Reduces the size of the thumbnail images.

Increase Thumbnail Size: Enlarges the thumbnail images.

Show/Hide Page Label: Toggles page labels shown beneath individual thumbnails on or off.

 Options menu: Provides quick access to commands for inserting and deleting pages. CTRL-clicking on a thumbnail will provide the same options.

Navigate through the thumbnails using either the keyboard ARROW keys or the mouse.

When working with the thumbnails, more than one page of a document can be selected in order to manipulate multiple pages at the same time through the Options menu (discussed above). Hold down SHIFT or ⌘ to select multiple pages.

You can change the order of pages in a multi-page PDF from the Thumbnails tab by dragging the thumbnail of a page into the desired location.