What problem does it solve? Creating accurate, legally compliant invoices manually is error-prone and time-consuming, especially when handling tax rules, sequential numbering, and print-ready formatting across jurisdictions. ## Core Features & Use Cases - Two Build Approaches: Generate standalone HTML invoice templates driven by URL query parameters for SaaS/subscription billing, or React components for one-off custom invoices. - Auto-Scale Print Layout: A two-layer page structure with a scaleToFit function keeps invoices on a single Letter or A4 page and exports to PDF via the browser print dialog. - Jurisdiction-Aware Compliance: Built-in guidance for EU VAT rules (Article 226), reverse charge notation, US sales tax, sequential numbering schemes, and payment terms. - Use Case: A SaaS founder needs to bill hundreds of subscribers monthly; one parameterized HTML template serves all clients, with each invoice link carrying client name, amount, dates, and a Stripe payment URL. ## Quick Start Ask the assistant to create an invoice and provide your seller details, client information, line items, payment terms, tax rate, billing email, and production domain.