A slider is a web design element that lets you showcase multiple images, videos, or pieces of content in a rotating slideshow-style format. You’ve likely seen sliders on the homepages of many websites, especially when they want to highlight a few key visuals or messages without overwhelming the page.

Often built using JavaScript, sliders add dynamic motion to a webpage, which can make the design feel more modern and interactive. Some sliders change automatically after a few seconds, while others let visitors click or swipe through at their own pace.

Why use a slider on your website?

Sliders are helpful when you want to feature more than one piece of content in a prominent spot—like announcing a sale, sharing testimonials, or showing off product photos. They make your website feel active and engaging without forcing a visitor to scroll or click away.

When designed with usability in mind, sliders can also support client engagement by directing users to key parts of your site or encouraging specific actions, like signing up or exploring a product.

Best practices for web sliders

Sliders can be powerful, but they should be used strategically. Here are a few quick best practices to keep in mind:

• Don’t overdo it. Too many slides or fast transitions can be overwhelming or distracting.
• Make sure it's mobile-friendly. Sliders should resize and function well on all devices.
• Use strong visuals and clear text. You’ve only got a few seconds—make it count.
• Test the loading time. A sluggish slider can hurt your site's SEO.
• Include a call to action. Guide your visitor to their next step, like a sign-up or purchase.

When a slider makes the most sense

A slider is most useful when you need to showcase content that's equally important, like:

• Highlighting different services or products
• Displaying a rotating banner of promotions
• Sharing blog headlines or upcoming events

If your AI website builder or design tool supports sliders, it’s usually pretty easy to add and customize one to match your brand.

FAQs about sliders in web design

Do sliders affect website loading speed?

Yes, sliders can slow down your page if they’re image-heavy or not optimized properly. Use compressed images and test performance regularly.

Are sliders good for SEO?

Sliders can impact SEO if they load slowly or hide content behind JavaScript. But with good coding practices and proper alt text, they can be SEO-friendly.

Can sliders be interactive?

Absolutely. Many modern sliders include clickable links, animated transitions, and other interactive features to encourage engagement.

Are sliders accessible?

Not always by default. For better accessibility, make sure your slider supports keyboard navigation and screen readers.

Should sliders auto-play?

Auto-play can be effective if done right, but it’s important to give users control. Always include navigation options like arrows or dots.

Where sliders fit into a modern website strategy

While sliders aren’t essential for every site, they’re still a popular and useful feature when used with intention. Whether you're designing a homepage that needs to pop or you want to rotate through seasonal promotions, sliders can help tell your story in a compact, visual way.

If you're using a tool like B12, adding a slider can be as simple as selecting a module and dropping in your content. And if you're working with B12 AI Assist, you can even use it to generate a copy for each slide or create a content plan around your featured items.

Thinking about launching or improving your website? Get started with B12 today and see how easy it can be.