How to use the invoice generator
Start with the "From" block: your name or business, the address lines you want printed and an email for queries. These details are remembered in your browser, so you only type them once. Fill in who you are billing, then check the invoice number and the two dates. The number starts at INV-0001 and moves on by one each time you come back after downloading, so INV-0007 becomes INV-0008. The due date is set 30 days after the invoice date, but you can shorten it to 14 or 7 days if that is what your contract says.
Add a line for each thing you are charging for: a short description, a quantity (hours, days or units) and a unit price. The preview updates as you type and shows the subtotal, any discount, tax at the rate you enter, and shipping or other charges. Pick a currency from the list or type your own symbol, drop in a logo if you have one, put your payment terms in the notes box and press Download PDF. The file is named after the invoice number, so INV-0008.pdf lands in your downloads folder next to the rest of the sequence.
Why use this rather than a template or an invoicing app
A spreadsheet template works until you need to send a PDF from your phone, or until someone nudges a cell and the total quietly stops adding up. Subscription invoicing services are excellent if you send fifty invoices a month, but for a freelancer who sends two, an account, a login and a monthly fee are a lot of overhead to print one total. This page draws the PDF with a small library running inside your browser; nothing about you or your client leaves your device, which matters when an invoice carries addresses and bank details.
The output keeps to the layout accountants expect: sender and recipient blocks, a numbered document with issue and due dates, itemised lines with right-aligned amounts, a totals section that shows tax as a separate figure, and your terms at the bottom. Long descriptions wrap onto extra lines, and a long list of items flows onto a second page with the column headings repeated. If you charge VAT or GST, enter the rate here and use the GST/VAT calculator linked below to double-check the figure before you send it.