August 2, 20212 min read

How to Add a Product to Cart When a Customer Visits a Specific Page

On this page

Why Auto-Add a Product on a Specific Page
The Core Snippet
Troubleshooting
Frequently Asked Questions
Conclusion

To add a product to cart when a customer visits a specific page in WooCommerce, hook into wp, check the current page ID with is_page(), and call WC()->cart->add_to_cart() — useful for landing pages that bundle a special offer with the page content itself.

Why Auto-Add a Product on a Specific Page

Landing pages promoting a single bundled offer can skip the extra “add to cart” click entirely
It’s handy for pre-loading a lead magnet or trial product tied to a specific campaign URL
It keeps the checkout populated automatically for a streamlined one-page funnel

The Core Snippet

/** Auto-add a specific product to cart when a chosen landing page loads */
add_action( 'wp', 'add_product_to_cart_on_landing_page_visit' );

function add_product_to_cart_on_landing_page_visit() {

    $target_product_id = 3342;
    $target_page_id     = 1287;

    if ( is_page( $target_page_id ) ) {
        WC()->cart->empty_cart();
        WC()->cart->add_to_cart( $target_product_id );
    }
}

Add a product to cart when a customer visits a specific page: the page before adding the code — Before

Add a product to cart when a customer visits a specific page: the page after adding the code — After

Avoiding Duplicate Additions on Refresh

Emptying the cart first (as shown above) prevents the same product from stacking up in quantity each time the visitor reloads the landing page — adjust this if your funnel actually needs to preserve other cart items instead.

Only Adding the Product Once Per Session

add_action( 'wp', 'add_product_once_per_session_on_landing_page' );

function add_product_once_per_session_on_landing_page() {
    $target_page_id = 1287;

    if ( is_page( $target_page_id ) && ! WC()->session->get( 'landing_offer_added' ) ) {
        WC()->cart->add_to_cart( 3342 );
        WC()->session->set( 'landing_offer_added', true );
    }
}

Troubleshooting

The Product Doesn’t Get Added

Confirm the product ID is correct and currently published/purchasable — a draft, out-of-stock, or deleted product ID will silently fail to add.

The Snippet Stopped Working After a Plugin Update

Temporarily deactivate all plugins except WooCommerce and retest — a caching plugin or a page builder that alters the request lifecycle around the wp hook is the most common cause of this suddenly breaking.

Frequently Asked Questions

Can I add the product only for first-time visitors?

Yes — combine the page check with a cookie or session flag so returning visitors on a repeat visit don’t get the product re-added automatically.

Can this add a product based on a URL parameter instead of a page ID?

Yes — check $_GET['offer'] (sanitized) instead of is_page() if you want the same landing page to trigger different products based on campaign links.

Will this work if the target page uses caching?

Full-page caching can prevent this PHP logic from running on every visit — exclude the specific landing page from your cache plugin’s rules to keep the auto-add reliable.

Conclusion

Adding a product to cart when a customer visits a specific page in WooCommerce is a short snippet built around is_page() and WC()->cart->add_to_cart() — just add session or cookie logic if you need to control how often it fires per visitor.

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