A tool that enables a user to easily and automatically create a photo gallery of thumbnail images on a Web page. A user selects a group of original images, and the tool automatically produces a corresponding group of thumbnail images on the Web page, with hyperlinks to the corresponding original images. Four predefined templates are included, each defining a different format for the thumbnail images including a vertically oriented gallery, a horizontally oriented gallery, a slide show gallery, and a montage gallery. Captions and descriptive text can also be entered and displayed for the thumbnail images in most of the style galleries. An edit function enables a user to add or delete images to existing galleries and to automatically modify the appearance of a photo gallery by selecting and applying a different template.