Add personalisation text, dropdowns, buttons, colour swatches, numbers and checkbox add-ons like gift wrap to any product. Assign option sets by product, collection or tag, preview them live, and drop one lightweight block onto your product page. Add-on prices are applied to the item itself in the cart and at checkout by a Shopify Function that reads your saved prices — so shoppers can't edit them, and no hidden "fee products" clutter your catalog or reports.

• Text, dropdown, buttons, colour swatch, checkbox add-on and number fields
• Paid add-ons priced at checkout by a Shopify Function, no fee products
• Required fields, character limits, and conditional fields
• Assign option sets to products, collections or product tags
• Lightweight theme block: under 7 KB of JavaScript, no frameworks