The FacetWP Stack Add-On (often referred to as Facet Stack) is a specialized extension for the core FacetWP plugin. Its primary purpose is to allow developers and site owners to group multiple facets (filters) into a single “stack” that can be easily managed, reused, and placed across different areas of a site.
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Reusable Filter Groups: Create a collection of facets once and reuse that specific “stack” on multiple pages without manually adding each individual facet shortcode.
Centralized Management: Change the order or settings of facets within a stack, and the updates will apply everywhere that stack is used.
Shortcode & PHP Support: Easily load stacks via a single shortcode (e.g., [facetwp stack="my_sidebar_filters"]) or template functions for theme integration.
Granular Control: Within each stack, you can reorder, show/hide, or customize specific facets.
Performance Optimized: Like the core plugin, the add-on is lightweight, AJAX-based, and cache-aware to ensure filtering remains fast.
| Specification | Details |
| Current Version | 1.1 (Last major update late 2025) |
| Developer | FacetWP (Official Add-On) |
| License Type | GPL (General Public License) |
| Primary Dependency | FacetWP Core (v4.0 or higher recommended) |
| Platform | WordPress 6.2+ |
| Compatibility | WooCommerce, Elementor, Bricks, Beaver Builder, and ACF |
The Stack Add-On is particularly useful for complex sites like job boards, real estate listings, or large e-commerce stores.
Creation: In the FacetWP admin area, you navigate to a new “Stacks” tab.
Configuration: You drag and drop existing facets (like Price, Category, and Rating) into the stack.
Deployment: Instead of pasting 5 different shortcodes into your sidebar or page builder, you paste one stack shortcode.
Scaling: If you need to add a “Color” filter later, you add it to the stack once, and it appears on all 50 product category pages automatically.
