Terms of use
Last updated: 1 October 2026
1. Provider and scope
The add-on SheetFaktura is provided by Arminas Attas, Vėtrungių g. 73-71, LT-06327 Vilnius, Lithuania ("we"). These terms apply to the use of the add-on. The add-on is meant for businesses.
2. Service
The add-on turns the data in an invoice sheet of a spreadsheet into files in the XRechnung (XML) and ZUGFeRD (PDF) formats and first checks the data for completeness and form. The files are made in the user's browser. The add-on does not send or archive invoices.
The add-on checks the format, not the tax content. It gives no tax or legal advice. The user remains responsible for the correctness of the data, the choice of VAT treatment, and the storage and sending of invoices.
3. Free use and licence
Each Google account can create 5 e-invoices free of charge. More e-invoices need a licence: 7.90 EUR a month or 69 EUR a year, plus VAT. A licence covers one Google account. Purchase and billing are handled by Polar as the seller (merchant of record); Polar's terms apply in addition. A subscription can be cancelled at the end of the current period in Polar's customer portal. The licence ends when the subscription ends.
4. Availability
The add-on runs on Google's platform and loads program libraries from jsDelivr. We aim for high availability but cannot guarantee it, in particular not during outages of these services. We adapt the add-on to new versions of the formats once they are published.
5. Liability
We are fully liable for intent and gross negligence, for injury to life, body or health, and under product liability law. For slight negligence we are liable only for breach of an essential contractual obligation, limited to the foreseeable typical damage and at most to the licence fees paid in the last 12 months. Otherwise liability is excluded.
6. Changes
We may change these terms with effect for the future. We announce material changes in good time, for example in the sidebar or by email.
7. Final provisions
The law of the Republic of Lithuania applies, excluding the UN Convention on Contracts for the International Sale of Goods. If a provision is invalid, the rest remains valid.