FlatInvoice turns your orders into clean, professional PDF invoices and packing slips in one click. Set your business details, accent color, tax label, and footer once - every document comes out consistent and ready to send to customers or accountants. Documents render in A4 and US Letter formats with payment status badges pulled straight from the order. FlatInvoice is lightweight and fast: it makes no changes to your storefront theme, needs no configuration beyond a two-minute setup, and works immediately after install for stores of any size.

• One-click PDF invoices and packing slips from any order
• A4 and US Letter formats with automatic page handling
• Your branding: business details, accent color, custom footer
• Paid, pending, and refunded status badges pulled from the order
• Lightweight and fast - no storefront theme changes required