Pick the flow that matches your workflow. Same engine, same PDFs, same client history.
Confirm your email — no credit card needed.
Logo, IBAN, VAT ID. Saved once, reused on every invoice.
Pick a client, add line items from your catalog, set the currency.
Download it, email it, or share a signed link with your client.
Sign up — your key appears under Developers in the dashboard.
npm i simpleinvoicing — works on Node, Bun, Deno, and modern browsers. Or call plain cURL.
One JSON body with supplier, purchaser, items. Same schema as the web editor.
Save it, email it, or pipe it straight to S3 — bytes are yours to keep.
Volume limits are a separate story — see the plans.