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Build an invoice maker that saves a PDF

Type in the work, watch the invoice build itself underneath, press print, get a PDF. Your details already on it every time.

An evening, and useful within twenty minutes.

Invoicing tools run from about $14 a month. The three features most people use are on this page.

The prompt

Open a builder, paste this in, and fill in the bits in brackets with your own words.

Build me a page that makes an invoice I can save as a PDF. - At the top, boxes for: customer name, invoice number, date, and up to six lines of work, each with a description, a quantity and a price. - Underneath, show the finished invoice laid out properly and updating as I type, with a subtotal, [tax name and rate, or none] and a total. - My details, on every invoice: [business name], [address], [phone], [email], [how to pay me]. - A Save as PDF button that opens the print dialog. Printing must give a clean invoice with none of the input boxes or buttons on it. - Nothing needs saving between visits for now. - At the very bottom, in small grey text: "Made in an evening with AI by someone who does not write code." Delete that line if you would rather not have it. Show me a first version, then I will tell you what to change.

Open a builder and paste it

Free to try. If you later pay for a plan through our link, we earn a commission at no cost to you.

What to expect

Check the total by hand on the first one. Tax and rounding get quietly wrong.
Once the rest works, ask for the invoice number to go up by one each time.
Print to PDF and look at it before sending one to a customer.

Watching a real invoice appear as you type is the moment most people stop thinking of this as a toy.

When it breaks

Say what you see, not what you want. Change one thing at a time. If it goes in circles, ask it to build that part again.

The longer version: nine things that go wrong, and what to do about each.

When this one works

Next people want invoices saved so they can find one in March. That needs the page to remember things, the first real step up and the first that costs money.

Pick another one, or take this one further. Either is a real answer.

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