YITH WooCommerce Compare plugin review and common issues

Blank cells appear when a product does not have a value assigned for a specific WooCommerce attribute. In WooCommerce → Products → [product] → Attributes tab, add the missing attribute with its value. The compare table shows all attributes defined on any of the compared products — if Product A has a “Battery Life” attribute and Product B does not, Product B’s Battery Life cell shows blank. Ensure all products intended for comparison have the same attribute set defined, even with “N/A” values where not applicable.

Go to YITH → Compare → Settings and verify the button position is configured (typically “After add to cart” or “Before add to cart”). If the position is set but the button still does not appear: (1) your theme may not hook into the standard WooCommerce product page hooks — check if your theme uses custom product templates that bypass standard WooCommerce hooks; (2) a caching plugin may be serving a cached page that predates the plugin activation; (3) use the shortcode [yith_compare_button] to manually place the button in your product page template if automatic positioning fails.

The comparison table loads product data via AJAX. Slow loading is usually a server response time issue: (1) enable object caching (Redis or Memcached) to cache product meta queries; (2) ensure products being compared have their attributes cached — first load may be slower; (3) reduce the number of attributes shown in the table by excluding non-essential ones in YITH Compare settings; (4) check if page caching is interfering with the AJAX comparison table load — exclude the comparison page URL from full-page caching.

Go to YITH → Compare → Settings → Fields tab. Here you configure which WooCommerce product data fields appear as rows in the comparison table: price, rating, add to cart, description, and all defined WooCommerce attributes. Enable or disable each field using the toggles. Drag rows to reorder the display sequence in the table. For custom WooCommerce attributes created in Products → Attributes, they appear in this list automatically once defined and assigned to products.

In YITH Compare settings, enable “Show Compare button in catalog” (shop and category pages). The plugin adds an “Add to Compare” button to product cards on shop and category archive pages. For themes with custom product card templates that bypass WooCommerce’s woocommerce_after_shop_loop_item hook, manually add the button shortcode [yith_compare_button] to the product loop template in your child theme.

Yes — customers can add any products from the store to the comparison table, regardless of category. However, cross-category comparisons may produce sparse tables if product attributes differ significantly between categories. For best results, configure YITH Compare to limit the maximum number of comparable products (typically 3-4) and optionally restrict comparison to same-category products using custom code.

Yes — YITH Compare adds variable products to the comparison table, displaying the parent product’s attributes. Variation-specific attributes appear as the parent variable product’s attributes in the table. The compare table does not show per-variation pricing for variable products — it shows the price range.

Yes, that can happen, especially on older sites with many plugins. This usually happens when the plugin, theme, and add-ons are updated out of sequence. In most cases, testing on staging catches the issue before it reaches the live site. From experience, backups and changelog reviews save a lot of cleanup time.

Start by checking whether another plugin already does the same job. In most cases, overlap is what creates avoidable conflicts and performance issues. A common issue is installing a plugin because it looks convenient without checking the stack first. From experience, a short compatibility review avoids most of the pain later.