Zoom The priority for improvements is the zoom feature. The zoom is so sensitive, it makes it difficult to use. Additionally, there is no need to zoom out past 80% of the original size of the image. Arrows In addition to being able to use the arrow keys to navigate from one media to the next, the arrows on the screen, rather than appearing when hovered over, would be more useful if they were permanently visible, as they are on the PD. Icons The “rotation” feature, rather than being nested in “image adjustments” would be more efficient as it's own icon. One icon could replace the four different buttons, as long as it was distinguishable from the “revert to default view” icon, which as it is now, could be confused with a rotate arrow. Additional features/design Reduce the width of the margin on the left (for text and thumbnails) Speed up the loading of the image (load as a complete image, rather than mosaically) Use the "esc" button to leave the document viewer and return to the main page Thanks!