Invoice PDF generator
Fill in the invoice fields, check the preview, and download a print-ready PDF. Developers can send the same HTML template to the PDF API to automate it.
PDFs are printed by Chromium on Cloudflare and streamed back. Nothing is stored. Free: 10 PDF or screenshot renders a day per IP.
Automate it
The template is plain HTML and CSS. Use the View HTML button to copy it, fill it from your billing data, and POST it to /v1/pdf from a cron job, a webhook or an n8n flow. The PDF comes back in about a second or two.
What a US invoice usually includes
- Your business name and address, plus the client's
- Invoice number, issue date and due date (for example Net 30)
- Line items with quantity, rate and amount
- Subtotal, sales tax (if you collect it) and the total due
- How to pay: ACH or bank details, a card link or a mailing address for checks
Frequently asked questions
Does it calculate sales tax?
It applies the tax rate you enter to the subtotal. It doesn't look up rates. Check your state's rules for what's taxable.
Is the invoice saved?
No. Nothing you type is stored. Keep the PDF you download.
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Updated November 10, 2026 by the Cuelark Team.