Need to generate invoices from your app or billing system? InvoicePDF is a focused invoice PDF API: send line items, tax rate and party details as JSON, get back a clean, professional PDF. No headless browser, no infra.
Amounts are handled as integer minor units (cents), so $27.00 + 10% tax is exactly $29.70, never $29.700000001. Multi-currency, including zero-decimal (JPY).
number, currency, seller_name, buyer_name, items[] (description, quantity, unit_price), optional tax_rate_percent, notes, due_date. That's it.