What is facturium?

facturium is a free invoice generator you run in a web browser tab. There is no account, no server upload, and no watermark — you fill in a form, watch a live preview, and download a one-page PDF invoice.

• Builds a clean, one-page PDF invoice from your business details, a client, line items, tax, and an optional discount.
• Saves drafts, sent invoices, and clients locally so you can reopen, duplicate, or mark them sent/paid later.
• Ships in six interface languages (English, Spanish, French, German, Russian, Arabic), each with its own number and date formatting.
• Works offline once the page has loaded — there is nothing to sync.

Everything you type — business profile, clients, line items, saved invoices — is written to this browser's IndexedDB storage, a database built into the browser itself. facturium has no server that receives your invoice content; there is nothing to upload and nothing for us to see. Closing the tab does not delete anything, but switching to a different browser or device starts from empty, since nothing is synced anywhere. The library holds up to 200 saved invoices and 100 clients (50 MiB total) on this device; you can export everything to a single backup file from Settings and import it back later, including on another device. See the full breakdown in our privacy page.

facturium is not accounting or bookkeeping software — it doesn't track payments received, generate reports, or file anything with a tax authority. It's also not a tax or legal advisor: it computes totals from the numbers you enter, but what belongs on your invoice for your situation is a question for a professional, not this tool. See what's generally on an invoice for a plain-language, non-legal overview.

Ready to try it? Open the builder or read the step-by-step walkthrough first.