Professional Invoice Generator is a free, browser-based tool for businesses, freelancers, and agencies. Create and customize invoices with your company and client details, auto-generated invoice numbers, invoice dates, due dates, and itemized billing. Supports multi-currency, multi-language, logo upload, discounts, tax calculations, and PDF export in a clean green corporate theme. Save and load invoices locally with auto-save options. Perfect for small businesses and freelancers who need fast, professional, and branded invoices without any software installation.