Swiper.js offers a variety of transition effects that can dramatically change the look and feel of your sliders. Some of the most popular built-in effects are fade, cube, and coverflow. The fade effect smoothly transitions between slides, making it perfect for galleries or slideshows where you want a subtle, elegant change. The cube effect rotates slides in 3D like the faces of a cube, which is great for eye-catching presentations or portfolios. The coverflow effect displays slides in a dynamic, overlapping style, creating a sense of depth and motion that works well for showcasing products or testimonials.

When choosing an effect, consider your project's tone and user experience. Use fade for minimal, distraction-free transitions. Pick cube if you want to impress users with a 3D visual. Select coverflow when you want to highlight multiple items at once and encourage interaction. You can easily switch between effects by setting the effect option in your Swiper configuration and adjusting related parameters for more customization.