The mouse and keyboard controls include:
| M | Toggles between mouse modes. |
| 1 | Sets the scale to 100%. |
| 2 | Sets the scale to 200%. |
| 5 | Sets the scale to 50%. |
| A | Shows as much of the image as possible without a margin. |
| +/- | Zooms (in/out). |
| +/- | Zooms in/out (using smaller steps if shift key is pressed). |
| Cursor keys | Pans the image. |
| Shift+Cursor keys | Moves the image evenly. |
| Enter | Enlarges viewer to full window size. |
| Escape | Stops moving the image or resizes viewer from full window to normal. |
Icons are provided to zoom and advance the image etc.