Exact totals, a real PDF and a SEPA payment QR
The printed column adds up to the printed total, because the arithmetic is exact
A form on the left, the invoice on the right, and exact decimal arithmetic underneath. Nothing in the interface adds two amounts together: every figure comes from one money engine that works in scaled integers, so 0.1 plus 0.2 is 0.3 and a hundred lines of 33.33 come to what they should.
The result: the column that is printed adds up to the total that is printed. That is the whole reason this tool exists.
The IBAN is verified with the MOD-97 checksum against the published length for its country, and the wording says the number is well formed - not that the account exists. A VAT number is matched against the format its country uses, and the tool states that no register is queried.
It does not claim your invoice is legally valid. What an invoice must contain differs by country and by whether you are registered for VAT, and it changes. The checks panel verifies what can be verified here and says plainly that your local requirements are not among them.
In this browser. The invoice, your saved customers and your bank details are in IndexedDB on this device, and the PDF is written in the tab - so no customer name, address, tax number or IBAN reaches a server.
The most important capabilities, explained in practical terms.
Every figure is computed in scaled integers rather than floating point. 0.1 plus 0.2 is 0.3. Each line is rounded to the currency smallest unit, and the totals are derived from the rounded lines, so nothing on the page is a cent away from anything else.
Twenty lines at 23% are one base taxed once, not twenty roundings added up - the two differ by cents over a long invoice, and one row per rate is what a VAT summary is. Tax-inclusive prices derive the net and take the tax as the difference, so net plus tax equals the gross you typed.
Clean, professional, minimal, compact, modern, banner, bold, stacked parties and letterhead. The same engine draws the preview and writes the PDF from the same font file, so the page break on screen is the page break in the file. A long invoice repeats the table header on every page that carries rows.
The IBAN is verified with the MOD-97 checksum against the published length for its country - 78 of them - and the result says the number is well formed, not that the account exists. A VAT number is checked against the format its country uses, and the tool states that no register is queried.
An EPC069-12 square that European banking apps read to pre-fill a SEPA transfer, carrying the account, the name and the amount. It is offered only for euro invoices with a valid IBAN, because that is all the standard covers - outside it the tool prints no code and says why, instead of a square that scans to nothing.
Save a customer once and fill the next invoice from the list; save a service once and add it as a line. Both lists live in this browser database, which is the only sensible place for a record of who you invoice.
The printed headings, the date format and the way amounts are written follow a document language that is set separately from the interface language. Only languages whose printed wording is complete are offered.
Missing numbers, a due date before the issue date, a quantity that is not a number, a tax rate outside 0 to 100, more paid than the invoice is for. What the tool will not claim is that the result satisfies your local law - that differs by country and by whether you are registered for VAT, and it says so.
A clear path from the official source to your first successful workflow.
Use one of the official links available for your device or browser.
Follow the store instructions or open the web application. No third-party installers.
Review the options, choose your preferences and start with the core workflow.
A transparent look at the core technologies used to build and maintain this product.
Your data stays on your device. Always.
