How to generate a PDF from a KSeF invoice (XML)

In KSeF, invoices are stored in XML format. To obtain a readable PDF document, the XML must be visualized. If you already have the invoice XML file, you can generate a clear PDF in just a few seconds. Below you will find a simple guide and solutions to common issues.

What you need to generate a PDF

The key requirement is the original KSeF invoice XML file. It contains all the structured data needed to create the PDF version.

You do not need the KSeF number or API access if you already have the XML file.

  • A complete KSeF invoice XML file.
  • A browser-based XML to PDF generator.
  • A valid file structure compliant with the KSeF schema.

Step by step: generating PDF from XML

The process is straightforward and takes only a few seconds:

  1. Upload the KSeF invoice XML file or paste its content.
  2. Click Generate PDF.
  3. Wait until the document is processed.
  4. Download the generated PDF file or preview it on screen.
Go to XML to PDF generator

Common issues and solutions

If the PDF does not generate, the reason is usually technical and easy to verify:

  • The file is not a valid or complete KSeF invoice XML.
  • The XML structure has been modified and no longer matches the schema.
  • The file contains encoding errors.

In such cases, use the original XML file downloaded directly from KSeF and ensure it contains the full invoice structure.

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