Shopify Collapsed Filters: A Developer's Guide to Cleaner Collection Pages

Ever found yourself staring at your Shopify collection pages, wishing those filter tabs weren't all wide open by default? You're definitely not alone. It's a common desire for store owners looking to create a cleaner, less cluttered shopping experience for their customers. This exact scenario recently popped up in the Shopify community, with a store owner, wingedmonkey, asking for help with their Nordic theme.

Shopify theme code editor showing Liquid file with '<details open>' tag for filter customization. — Shopify theme code editor showing Liquid file with '
' tag for filter customization.

The Quest for Collapsed Filters: A Common Shopify Challenge

Like many of you, wingedmonkey was using the Nordic theme and wanted their collection filter tabs to be collapsed by default. They'd already checked the theme settings and found no easy option – a familiar frustration for many of us when we hit the limits of built-in customizations. While Shopify's platform offers incredible flexibility for merchants, some specific UI tweaks require a deeper dive.

This is where the community really shines! As Custom-Cursor rightly pointed out early in the discussion, if your theme doesn't offer a specific setting for collapsed filters, you're likely looking at a "small Liquid/CSS/JS customization." It's a classic Shopify scenario: when the theme editor doesn't quite do what you want, it's time to roll up your sleeves and dive a little deeper into the code.

Why Collapsed Filters Matter for Your Shopify Store's UX

Before we jump into the 'how,' let's understand the 'why.' Collapsing filters by default offers several significant advantages:

Cleaner Aesthetics: A less cluttered page immediately looks more professional and inviting.
Improved First Impression: Customers see products first, not a long list of filter options, reducing visual noise.
Enhanced Mobile Experience: On smaller screens, open filters can consume valuable real estate, forcing excessive scrolling. Collapsed filters make mobile navigation much smoother.
Focused Shopping: Shoppers can choose to engage with filters when they need them, rather than being presented with all options upfront.

However, as Icey.Lane wisely noted, it's not just about "collapsed looks cleaner." You should still keep the selected state and active-filter count visible. Consider leaving the highest-use filter group open on desktop if analytics suggest it's frequently used. Always verify the mobile drawer separately, as its behavior can differ.

Diving into the Code: Where to Start Your Customization Journey

Before you touch a single line of code, there's a golden rule that WefJoren wisely emphasized: always duplicate your theme first! This is non-negotiable. Making changes on a duplicate theme means you can experiment freely without risking your live store. Once you're happy with the changes, you can publish the duplicate.

Step-by-Step: Finding and Modifying Your Filter Code

Shopify themes, especially modern ones, often use the

HTML element for collapsible content, including filters. This element, combined with a

tag, provides native browser support for accordion-like functionality.

Duplicate Your Theme: Navigate to Online Store > Themes in your Shopify admin. Find your current theme, click Actions > Duplicate.
Access Theme Code: On your duplicated theme, click Actions > Edit code.
Locate Filter Markup: You'll need to find the Liquid file responsible for rendering your collection filters. Common locations include:
- sections/collection-filters.liquid
- snippets/collection-filters.liquid
- sections/main-collection-product-grid.liquid
- Files within a components/ or blocks/ directory related to collection filtering.
Search for keywords like "filter," "accordion," "details," or "summary" within these files.
Identify the 'open' Attribute: Once you locate the
element that wraps your filter groups, look for the open attribute. If it's present (e.g.,
), this is what's causing your filters to be expanded by default.
```
 
  Filter by Color
  
```
Simply remove the open attribute from the
tag. This will make the filter collapsed by default.
Check for JavaScript Initialization: Sometimes, themes use JavaScript to dynamically add or remove the open attribute, or to manage the accordion state. If removing the open attribute from Liquid doesn't work, search your theme's JavaScript files (often in the assets/ folder, e.g., theme.js, global.js, or specific component JS files) for code that manipulates
elements or filter accordions. You might need to modify this JavaScript to ensure filters start closed.
Address Mobile Filters Separately: As WefJoren highlighted, themes often use separate markup or logic for mobile filters. Test your collection page on mobile devices thoroughly. You might need to apply similar changes to a different file or section of code that handles the mobile filter drawer.
Refine Display (e.g., 'Reset' text): wingedmonkey mentioned seeing "reset" text instead of an arrow. This is likely a styling issue. Your theme's CSS (e.g., in assets/base.css, assets/theme.css, or component-specific CSS files) will dictate the appearance of the
element. You might need to add or modify CSS rules to replace text with an icon (e.g., using pseudo-elements like ::after or ::before with an SVG or font icon) to achieve the desired arrow visual.
Thorough Testing: After making changes, test extensively on desktop and mobile, across different browsers, to ensure all filters behave as expected and no new issues have been introduced. Check filter functionality, selected states, and the overall layout.

Beyond the Code: User Experience Best Practices

While coding the solution is important, always keep the user in mind. Icey.Lane's advice is crucial:

Visibility of Active Filters: Ensure customers can easily see which filters are currently applied and how many items are displayed.
Clear Reset Options: Make it obvious how to clear individual filters or all filters.
Monitor Analytics: Pay attention to user behavior. Are people opening the filters? Are they encountering zero-result states? Are they exiting the collection page frequently? These signals can help you refine your filter strategy.

When to Call in the Experts

While these customizations can significantly improve your store's UX, diving into theme code can be daunting, especially if you're not familiar with Liquid, HTML, CSS, or JavaScript. If you find yourself struggling, or if your theme's structure is particularly complex, it's always best to consult with a Shopify development expert. At Shopping Cart Mover, we specialize in not just seamless migrations but also custom Shopify development and theme optimizations, ensuring your store performs flawlessly and looks exactly how you envision it.

A well-optimized collection page with intuitive filtering can make a huge difference in conversion rates and customer satisfaction. By taking the time to implement collapsed filters correctly, you're investing in a superior shopping experience for your customers.

Enhancing Shopify UX: How to Collapse Collection Filter Tabs by Default