Invoices and KSeF without the clutter. From issue to accounting.
Create invoices, organise their approval and submit them to Poland's KSeF in one place. Once confirmed, hand your accountant a complete document with its KSeF number, category and the information needed for further work.
One working space before the accounting system.
Draft
Prepare the document and return to it before approval. Submission to KSeF remains a separate, deliberate step.
Approval
Separate document preparation from the decision of the approver. The operation history remains available in the system.
Numbered categories
Create categories such as 001, 002 and 003. Their numbers can later support rules and schemes in the accounting system.
Controlled hand-off
A public link is available only after the invoice has been confirmed in KSeF and provides a route to verify it in the Ministry of Finance system.
Hear about an important invoice before you open the register.
The service can regularly check for new purchase invoices and add them to your register automatically. When a document meets your conditions, you can receive an SMS, an email or both.
Turn on notificationsYour conditions
Set a minimum amount or choose a supplier whose invoices you do not want to miss.
SMS or email
Choose the notification channel that suits you. You can also use both at the same time.
Instantly or once a day
Receive prompt alerts or one daily summary at the time you choose.
Send Optima a document that is ready for further work.
Create the invoice, collect the required approvals, submit it to KSeF and add the description needed by your accountant. The export includes the KSeF number, selected categories and a readable HTML visualisation of the document.
Numbered categories help indicate the relevant cost type, sale or processing stage. After import, the accounting office can use these numbers in its own Optima schemes and rules.
Choose the amount of detail appropriate for the invoice.
Simple invoice
Create a typical invoice using the fields needed most often. Totals are calculated automatically, and you can then describe, approve and submit the document to KSeF.
Extended FA(3) invoice
Add GLN, GTIN/EAN, purchase order numbers, delivery note numbers and delivery locations, or upload a complete FA(3) XML. The information remains part of the document submitted to KSeF.
Use it free of charge. Support development with any amount if you wish.
Core invoice and document handling is not blocked by a paid plan. If fv.converts.ninja genuinely saves you time, you may support its development voluntarily. Not contributing does not reduce security or disable KSeF.
How voluntary support worksInvoice content is not sent to public AI services.
Documents are not sent to ChatGPT, Gemini, Claude or other public language models. Category suggestions are prepared in a controlled environment and can always be changed before saving.