The sidebar has long been the traditional way to filter products in online stores. However, in recent years, horizontal filter toolbars have become increasingly popular, leading many to question whether they are a better alternative. So, is the horizontal format truly superior, or does the sidebar still have a strong place in modern eCommerce? Let’s break down the pros and cons of both approaches.

Why Horizontal Filters Became Popular

One of the main reasons behind the popularity of horizontal filters is convenience. Displaying filtering and sorting tools within a single visible area allows users to refine products without shifting their focus away from the catalog. Everything feels accessible and immediate, which can be especially useful on smaller screens or minimalist layouts.

On the other hand, sidebars often require extra effort from users. They may need to scan the page more carefully to find filtering options, and in some cases, the sidebar is simply ignored, though this is usually an issue of poor implementation rather than the format itself.

Don’t Dismiss the Sidebar Too Quickly

Before rushing to replace a sidebar with a horizontal toolbar, it’s important to understand that horizontal filters don’t work equally well for all websites. In reality, most online stores, regardless of niche, can benefit from a well-designed and thoughtfully implemented sidebar.

The key factor is not the position of the filter, but how well it is planned, structured, and integrated into the overall design. A poorly designed horizontal filter can be just as frustrating as an ineffective sidebar.

The Case for Horizontal Filters

Supporters of horizontal filters often point out that sidebars can create friction for certain users. For example, when filtering options are too long or extend beyond a single screen, users may struggle to find what they need. In many cases, the sidebar goes unnoticed entirely, causing visitors to miss the opportunity to refine results, and potentially leave the site without converting.

However, these issues usually stem from weak design choices, cluttered structures, unnecessary options, or technical limitations. With the right filtering solution, many of these problems can be resolved without abandoning the sidebar layout altogether.

What Makes a Sidebar Truly Effective?

A functional and user-friendly sidebar is compact, visually clear, and easy to scan. Even users who instinctively focus on the product grid should be able to notice the filtering tools at a glance.

While horizontal filters may stand out more visually, this does not make them a universal rule in website design. The real goal is to adapt the filter’s appearance to match the site’s layout and user behavior. This is where flexible product filter plugins play a crucial role, allowing store owners to fully customize sidebar filters to suit their needs.

Why the Sidebar Is Still Relevant

Horizontal toolbars come with one major limitation: space. When too many filtering options are added, they can quickly clutter the screen and overwhelm users. This makes horizontal filters more suitable for stores with a limited number of filtering criteria, where simplicity is key.

Dropdown-based horizontal filters can help save space, but only if they are technically optimized and perform smoothly. Otherwise, they risk harming the user experience more than a traditional sidebar ever would.

Designing a horizontal filter that works seamlessly across devices, niches, and user expectations is a complex challenge, one that is not always worth the trade-off.

Conclusion

Horizontal filters are highly effective when the number of filtering options is small and the implementation is technically flawless. In most other cases, a well-structured sidebar remains a reliable and user-friendly solution that does not compromise usability or conversions.

The most important factor is choosing the right filtering tools. A technically solid product filter solution for WordPress and WooCommerce can enhance visibility, improve navigation, and positively impact conversions, regardless of whether filters are displayed in a sidebar or a horizontal layout.