49% of consumers have made impulse purchases after seeing personalized product recommendations based on their previous purchases or browsing history.
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:Woocommerce custom product fields allow you to add additional data related to the product. You can add size, colour, variations, and other information that is not covered by Woocommerce default fields.
This blog post will tell you how to add custom product fields in woocommerce using code snippets.
By inserting code snippets, you can create various custom fields such as Drop-down, Radio button, checkbox, and custom text.
You can also read about some other woocommerce snippets in this blog post.

Here is the Blog outline.

  • Introduction of custom product fields in WooCommerce
  • Importance of custom fields in providing more information about your products.
  • Custom Field Types
  • 5 code snippets for adding custom fields to the product data section on the product edit page.
  • Conclusion

2: Importance of custom fields

Did you know that 75% of online shoppers value product descriptions as the most important aspect of their purchase decision?
Woocommerce comes with 2-3 default fields which are not enough to provide proper information to customers related to products. For example, If you want to buy a dress. You will check the colour, design, and size, and maybe you want to customize it. But what if an E-commerce website only shows the colour and design and not other details? To remove this problem, Website owners can add custom field products to their e-commerce store to provide more options to their customers.
We will create Custom product data fields using the WooCommerce code snippet.

3:WooCommerce custom field types

Following are the types of custom fields such as Text Field, Radio Button, uploads file etc.

  • Text field
  • Textarea
  • Dropdown/select field
  • Radio buttons
  • Checkboxes
  • Date fields
  • Number fields

4:5 Woocommerce Code snippets For Adding Custom Field

Here are 5 code snippets you can use to add custom product fields in WooCommerce:

1. Add a custom field to the General tab

// Add custom field to General tab
add_action( 'woocommerce_product_options_general_product_data', 'add_custom_field_to_general_tab' );
function add_custom_field_to_general_tab() {
    woocommerce_wp_text_input( array(
        'id'          => '_custom_field',
        'label'       => __( 'Custom Field', 'woocommerce' ),
        'placeholder' => 'Enter custom field',
        'desc_tip'    => true,
        'description' => __( 'Enter custom field description.', 'woocommerce' ),
    ) );
}

// Save custom field data
add_action( 'woocommerce_process_product_meta', 'save_custom_field_to_product' );
function save_custom_field_to_product( $post_id ) {
    $custom_field = isset( $_POST['_custom_field'] ) ? $_POST['_custom_field'] : '';
    update_post_meta( $post_id, '_custom_field', sanitize_text_field( $custom_field ) );
}

2. Add a custom field to the Inventory tab

// Add custom field to Inventory tab
add_action( 'woocommerce_product_options_inventory_product_data', 'add_custom_field_to_inventory_tab' );
function add_custom_field_to_inventory_tab() {
    woocommerce_wp_text_input( array(
        'id'          => '_custom_field',
        'label'       => __( 'Custom Field', 'woocommerce' ),
        'placeholder' => 'Enter custom field',
        'desc_tip'    => true,
        'description' => __( 'Enter custom field description.', 'woocommerce' ),
    ) );
}

// Save custom field data
add_action( 'woocommerce_process_product_meta', 'save_custom_field_to_product' );
function save_custom_field_to_product( $post_id ) {
    $custom_field = isset( $_POST['_custom_field'] ) ? $_POST['_custom_field'] : '';
    update_post_meta( $post_id, '_custom_field', sanitize_text_field( $custom_field ) );
}

3. Add a custom field to the Attributes tab

// Add custom field to Attributes tab
add_action( 'woocommerce_product_options_attributes', 'add_custom_field_to_attributes_tab' );
function add_custom_field_to_attributes_tab() {
    woocommerce_wp_text_input( array(
        'id'          => '_custom_field',
        'label'       => __( 'Custom Field', 'woocommerce' ),
        'placeholder' => 'Enter custom field',
        'desc_tip'    => true,
        'description' => __( 'Enter custom field description.', 'woocommerce' ),
    ) );
}

// Save custom field data
add_action( 'woocommerce_process_product_meta', 'save_custom_field_to_product' );
function save_custom_field_to_product( $post_id ) {
    $custom_field = isset( $_POST['_custom_field'] ) ? $_POST['_custom_field'] : '';
    update_post_meta( $post_id, '_custom_field', sanitize_text_field( $custom_field ) );
}

4. Add a custom field to the Variations tab

// Add custom field to Variations tab
add_action( 'woocommerce_product_after_variable_attributes', 'add_custom_field_to_variations_tab', 10, 3 );
function add_custom_field_to_variations_tab( $loop, $variation_data, $variation ) {
    woocommerce_wp_text_input( array(
        'id'          => '_custom_field[' . $loop . ']',
        'label'       => __( 'Custom Field', 'woocommerce' ),
        'placeholder' => 'Enter custom field',
        '

5:Add checkbox to a custom field in WooCommerce:

// Add checkbox to custom field
add_action( 'woocommerce_product_options_general_product_data', 'add_custom_checkbox_to_general_tab' );
function add_custom_checkbox_to_general_tab() {
    woocommerce_wp_checkbox( array(
        'id'          => '_custom_checkbox',
        'label'       => __( 'Custom Checkbox', 'woocommerce' ),
        'desc_tip'    => true,
        'description' => __( 'Check to enable custom field.', 'woocommerce' ),
    ) );
}

// Save custom checkbox data
add_action( 'woocommerce_process_product_meta', 'save_custom_checkbox_to_product' );
function save_custom_checkbox_to_product( $post_id ) {
    $custom_checkbox = isset( $_POST['_custom_checkbox'] ) ? 'yes' : 'no';
    update_post_meta( $post_id, '_custom_checkbox', $custom_checkbox );
}

5:Wrapping Up: In this blog, we read about the importance of Custom fields. we also read how you can create custom fields by using some woocommerce code snippets. For inserting codes it’s better to create a child theme and then add that code function.php file. You can also use the code snippet plugin for inserting code.
If you are still confused related to custom fields and not getting how and where to add codes, please comment below, I would love to help you. Thanks:)

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