HDWebmobile Product Options & Add-ons

HDWebmobile Product Options & Add-ons lets you add paid customization options to any simple product: a text field for engraving, a dropdown for a size or material upgrade, or a checkbox for gift wrap. Each option can add a flat amount to the price, and shoppers see a live running total as they make their selections — before they even click Add to Cart. Every price is a flat amount you enter yourself and it's looked up fresh from the product whenever something is added to the cart — there is no formula language, expression evaluator, or anything resembling eval() anywhere in this plugin. That's a deliberate design choice: a well-known paid "product add-ons" plugin for WooCommerce disclosed a critical, unauthenticated Remote Code Execution vulnerability caused by unsafely evaluating merchant-defined pricing formulas. This plugin gets the same practical result (customers pay more for the options they pick) without that entire class of risk. Key Features

• Text, dropdown, and checkbox product options, each with an optional flat price adjustment
• A live price preview updates on the product page as customers fill in options, before adding to cart
• Works correctly everywhere in WooCommerce: the product page, cart, Mini-Cart, Checkout (classic and block-based), the order confirmation page, order emails, and the admin Edit Order screen -- all using WooCommerce's own standard cart/order mechanisms, not a separate parallel system
• Required options are enforced on the server, not just with a browser-side required attribute -- a request that skips a required option is rejected before it reaches the cart
• Every submitted option value is re-validated against the product's own current configuration before any price is applied, so a tampered request can't fabricate a discount or a fake option
• No formula evaluation of any kind -- every price is a flat, merchant-entered amount

Limitations (please read before installing)

• Simple products only -- variable, grouped, and external products aren't supported in this version
• Flat-amount pricing only -- there's no percentage-of-price option and no pricing formulas; this is a deliberate security boundary as well as a simplicity one (see Description)
• No conditional logic between options (e.g. showing one option only when another has a specific value)
• Options are configured per product -- there's no shared, reusable option set applied across multiple products in this version

1.0.0

• Initial release: text/dropdown/checkbox product options with flat price adjustments, live price preview, server-side required-option enforcement, server-side re-validation of every submitted option against the product's current configuration.