---
title: "Quittio\\Core\\Pdf\\Xmp – API-Referenz"
description: "The public classes in Quittio\\Core\\Pdf\\Xmp."
canonical_url: "https://quittio.dev/docs/api/Quittio/Core/Pdf/Xmp"
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> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api)

# Quittio\\Core\\Pdf\\Xmp

## quittio/core \#

### [Quittio\\Core\\Pdf\\Xmp](https://quittio.dev/docs/api/Quittio/Core/Pdf/Xmp)

- [`FacturXXmp`](https://quittio.dev/docs/api/Quittio/Core/Pdf/Xmp/FacturXXmp)XMP metadata for Factur-X/ZUGFeRD: the fx description and the PDF/A extension schema. Without the extension schema the PDF is readable, but not valid PDF/A.

```json
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```