eInvoice Validator for Mustang

Free one-file app · eInvoice Validator for Mustang

Validate e-invoices with Mustang, without ever opening a command line.

The eInvoice Validator for Mustang validates your e-invoice with Mustang, the open-source validation program from the ZUGFeRD and Factur-X community, and shows the report in plain language. For a PDF, Mustang also checks the PDF itself against PDF/A-3.

Runs in your browser
No upload
No installation

In brief

Here, the validation runs through the validation service of this website. If you want to validate without the website, you get the app in the shop in an edition for the Validator Bridge on your own computer.

Features

What the app does for you

One drop zone for PDF and XML

The drop zone accepts ZUGFeRD and Factur-X PDFs as well as XML invoices in both CII and UBL syntax.

Clear messages when a file doesn’t fit

A PDF without an embedded invoice, such as a scanned document, is rejected with a clear message, and so is a file with the wrong extension or a file that is too large.

The original report as report.xml

A button above the report saves it exactly as the Mustang validator produced it.

A clear note for newer versions

If an invoice names a version Mustang does not know yet, Mustang checks against the older version, and a note above the report says so.

Try it

eInvoice Validator for Mustang in your browser

Download a sample
one of the files below

Drag it into the app
or click the drop zone in the app

Read the result
in the tab and right at the fields

Sample invoices – drag one into the app

The app runs here in full and free of charge. Drop an e-invoice into it: XML (XRechnung, Peppol BIS, CII or UBL) or a PDF with an embedded invoice (ZUGFeRD, Factur-X). The invoice is read in your browser. For the validation, the app sends the invoice to the validation service of this website and shows its report. The invoice is processed there only for the validation and is not stored. Download a file and drop it into the app.

Your app

One file, everything inside

Open
here on the page or as a file

Drop the invoice
XML or PDF

Read the result
the invoice stays with you

The app is a single HTML file. You open it here on the page, or you save it with “Open in a new window” and then “Save page” on your computer. After that you open it with a double click.

eInvoice Validator for Mustang

One file you keep: no installation, no sign-up.

Open in a new window

Download for free

Read the manual