You could have downloaded LRViewer 1.3.5 from our software library for free. LRViewer is categorized as Photo & Graphics Tools. This software is a product of Basepath Associates.
From the developer:
LRViewer is a standalone viewer for Lightroom image previews that also allows you to extract previews as JPEG files. LRViewer makes no changes to the Lightroom catalog, which means that it can't create any previews that aren't already present.
Both the catalog (ending in "lrcat" or "lrdb") and the associated preview file (ending in "lrdata") must be present. You open just the catalog; LRViewer then opens the preview file automatically.
You may want to check out more software, such as Simple Slide Show, SPX Editor or Gena Web Gallery Creator, which might be similar to LRViewer.
Viewers & Editors