What is a P7M file
A .p7m file is a digitally signed document in the CAdES standard, used above all in Italy. Think of it as an envelope: inside is the original document, on top is the signature of whoever issued it, with their certificate. That is why the name usually has two extensions: the document’s own, then .p7m.
Common cases
- .pdf.p7m: a signed PDF, such as a deed, a contract, a certificate or a public administration document.
- .xml.p7m: a signed Italian e-invoice, in the XML format of the national exchange system.
- .p7m.p7m: the same document signed by more than one person, one signature over the other.
Why your computer will not open it
Windows, macOS, iOS and Android have no default program for this envelope: double-clicking does nothing, or shows unreadable text. You need a tool that removes the envelope and shows the document.
How to open it
Drop the file on our page: you see at once who signed, the certificate validity and whether the content is intact. The PDF shows as a preview, the invoice becomes a readable page. Everything happens in your browser: the file stays on your device.