Slideshow

A slideshow is a sequence of separate pages or images designed to be viewed in order, typically with transitions. It is used to present information, tell a story, or showcase products or artwork. Slides are often displayed on a screen for audiences in lectures, meetings, or exhibitions, and can be created with various media such as photographs, text, and graphics.

Historically, slideshow demonstrations began with magic lanterns in the 17th century and evolved through glass slides and photographic slides. In the digital era, slideshows are commonly produced with software that stores slides as pages in a file, enabling automated playback, transitions, and timing.

There are different forms of slideshows. Image slideshows display a sequence of photographs or pictures. Presentation slides are designed to accompany spoken narration and often include bullet lists and diagrams. Web slideshows, including carousels, display slides on websites with navigation controls or automatic rotation.

Common components include slides (pages), transitions between slides, timing or autoplay, navigation controls, captions, and thumbnails. Files may be saved in proprietary formats such as PowerPoint (.pptx) or Keynote, or in open formats such as PDF or HTML/JavaScript for web use.

Best practices emphasize clarity, appropriate pacing, accessible design, and responsive behavior. Alt text for images, keyboard navigation, and avoiding excessive motion help ensure accessibility.