How to create an invoice
Start by filling in your business — the name, address and contact details that appear at the top of the invoice — and optionally add your logo. Then enter who you're billing under Bill to. Add a line for each product or service with a quantity and unit price; the amount for each row and the running subtotal are worked out for you. Set a discount and a tax rate if they apply, add any payment terms as a note, and the total updates instantly.
Download as PDF or print
When your invoice looks right, click Download PDF to save a clean, professional A4 PDF you can email to your client, or click Print to send it to a printer or save it from your browser's print dialog. The PDF is built on your device by a self-hosted PDF engine — there is no upload, no queue and no server round-trip — and it is named after your invoice number, for example invoice-INV-0001.pdf. Your figures and your client's details are never sent anywhere, and your current invoice is saved locally, so it's still here next time you open the page on the same device.
What to put on an invoice
A complete invoice usually includes a unique invoice number, the issue date and a due date, your business name and contact details, the client's details, an itemised list of what you're charging for, the subtotal, any tax, and the total due. Adding clear payment terms — such as how and when to pay — in the notes helps you get paid on time. This generator gives you fields for all of these. There is no cap on the number of line items, the discount can be a flat amount or a percentage (and is never allowed to exceed the subtotal), tax is applied after the discount, and you can pick from 14 currencies: USD, EUR, GBP, CAD, AUD, NZD, JPY, CNY, CHF, INR, SGD, ZAR, BRL and MXN.
Free invoice generator: the specifics
"Free, no sign-up, instant PDF" is said by nearly every invoice tool. Here is what each of those words means on this page, spelled out so you can check it against anything else you are looking at.
| Feature | LK Forge Invoice Generator |
|---|---|
| Sign-up required | None. No account, no email address, no free trial — the form on this page is the whole product. |
| Where processing happens | Entirely in your browser. The page sends none of your data anywhere; the PDF is built on your device by a self-hosted PDF engine, and your current invoice is kept only in your browser's local storage. |
| Currencies | 14 — USD, EUR, GBP, CAD, AUD, NZD, JPY, CNY, CHF, INR, SGD, ZAR, BRL, MXN. |
| Bulk from a spreadsheet | Yes. The Bulk Invoice Generator reads an .xlsx, .xls or .csv file and returns a ZIP with one A4 PDF per invoice number. |
| Watermark | None. The PDF carries your logo and your details, and no branding of ours. |
| Invoice limit | None. There is no cap on how many invoices you create, and no cap on the number of line items on one invoice. |
Frequently asked questions
Is this invoice generator really free?
Yes — the LK Forge Invoice Generator is completely free, with no sign-up, no watermark and no limit on how many invoices you create. It runs entirely in your browser, so your business and client details are never uploaded to a server. Nothing is held back behind a paid tier, so the PDF you download is the finished invoice. Because the PDF is built on your own device, there is no per-invoice cost to charge for.
Can I add my company logo?
Yes — the invoice generator takes your own business logo. Click Add logo and choose a PNG or JPG image. It appears at the top of the invoice preview and in the downloaded PDF. The image stays on your device and is embedded straight into the PDF.
Where is my invoice saved?
Your current invoice is saved automatically in your browser's local storage, so it's still there when you come back on the same device and browser. Downloaded PDFs go wherever your browser saves downloads. Nothing is stored on our servers.
Does the invoice generator work out tax, discounts and the total?
Yes — the invoice generator totals every line, then applies a discount and a tax rate to reach the amount due. Each line total is quantity multiplied by unit price, and those line totals add up to the subtotal. A discount can be a flat amount or a percentage, and it is subtracted from the subtotal before tax, so tax is charged on the discounted figure. The tax rate is a percentage you set yourself, with a label such as VAT or GST, and every figure is rounded to two decimal places.