If the compare button isn't appearing on your product pages, work through the following checks.

1. Check Your Allowed Product Types

Go to Settings → Compare Visibility and confirm the Allowed Product Types list is not empty and includes the type of the product you're testing.

The product type must match the Product Type field on the product in Shopify exactly.

2. Check Tag Filters

If Exclude tag filters are configured, confirm the product you're testing doesn't have any of those tags applied.

If Include tag filters are configured, confirm the product has at least one of those tags.

3. Confirm the Theme Block or Snippet Is Installed

• OS 2.0 themes: Verify the Compare Button block has been added to your product template in the Theme Customizer and the theme has been saved and published.
• Legacy themes: Verify the compare button snippet has been pasted into your product template and the theme file has been saved.