The thumbsize option specifies the largest size (in pixels) at which a thumbnail displays in the DjVu Browser Plug-in before it starts to lose clarity. Thumbnails are small representations of each page in a DjVu document, which make it easier to navigate within a multiple-page document.
This option affects the quality (not the size) of thumbnails in the plugin and the total file size of the DjVu document. You can assign values 64–256 to enable thumbnails; larger values increase the file size more than smaller values. A value of 128 is recommended. You can also set this option to 0 to remove all thumbnails from the document.
Supporting commands:
djvubundle, djvujoin