Open the picture,
Press and hold the Control Button
Scroll the wheel on your mouse.
Sorry to sound thick I do not have a mouse.Regards John
Hi John, There are many ways of zooming in and out of. Try the CTRL key and the + and -keys, (hold the CTRL key down while you press the other key) The + key should make the image bigger, the - key smaller. You could also use the menus at the top of screen as one of them should have a 'View' option, and under that is normally a 'Zoom' option. Some browsers show a percentage, some just 'Zoom in/ zoom out'. Unfortunately not all browsers are the same, Internet Explorer being one of the worst for features, and security, but that's another story.
Hope that helps with the image viewing.