Signed documents, read privately
Open P7M files.
Keep documents private.
Read the original and check its signature in your browser, with every PDF page available.
No payment or account required. Your file stays on your device.
Processed in your browser, no uploads
Drop your .p7m file here
Your file stays on your device. No uploads.
Every PDF page
Technical signature checks
Original document download
From attachment to document
Three steps.
Nothing uploaded.
Received an attachment by PEC, Italy’s certified email service? Open the .p7m envelope to read the signed original and check its signature.
The reader identifies the content itself; a filename alone is not enough.
Choose your file
Drop the P7M or select it from your device. Base64 and PEM formats are also supported.
Read the result
Review the signers and signature status. Multiple signers and nested signature layers are shown separately.
Download the original
View every PDF page. Downloads preserve the original document’s bytes.
Identify the content, without assumptions
A P7M envelope
does not always contain a PDF.
CAdES (CMS Advanced Electronic Signatures) is a signed envelope. It may contain a PDF, XML or a document for another application.
The original is never rewritten. XML invoices also have a readable view.
- PDF documents
- View every page and download the original PDF.
- XML and FatturaPA
- FatturaPA, Italy’s electronic invoice format: read amounts, VAT, payments and attachments. Save a PDF through printing; the original XML remains available.
- Documents for other applications
- Download recognised Word, Excel and other document formats to open in the appropriate application.
- Detached signatures and encrypted files
- The reader explains missing content and encryption. It never presents an unverified positive result.
Privacy built into the process
Your file never leaves your device.
Your browser reads, extracts and verifies. It downloads only application resources and the trusted provider list; your document and its name are not transmitted.
The site does not store documents. Download a copy to keep on your own device.
How your data is handledA result worth reading carefully
Clear checks. Explicit limits.
Checks cover the document, signature, certificate and Italian trust chain. The result shows the list’s date and certificate details.
Revocation and timestamps are not checked. Expired certificates are reported as expired: a signer’s claimed date does not establish past validity.
This is technical verification. It provides no regulated preservation service and does not replace professional assessment of a document.
Frequently asked questions
Answers before you open a file
How do I open a P7M received by PEC (Italian certified email)?
PEC is Italy’s certified email service. Select or drop the .p7m attachment. Your browser extracts the original; if it is a PDF, you can view every page and download it.
Is my document uploaded to a server?
No. Reading and verification take place in your browser. Only public resources and the trusted provider list are downloaded; your document and its name are not sent.
Does a P7M always become a PDF?
No. The original is extracted. FatturaPA, Italy’s electronic invoice format, also has a readable PDF copy; other XML and Word documents keep their original format.
What does “Valid signature” mean?
Document integrity, certificate and trust-chain checks passed. Revocation and timestamps are not checked, and the result makes this clear.
Can I open a file with multiple signatures?
Yes. Signers and nested layers remain separate. Countersignatures are reported as unverified.
Do I need an account or payment card?
No. The reader requires no account, purchase or payment details.
What is the file-size limit?
Up to 100 MB, with a warning above 50 MB. Processing time depends on the document and your device.
Does the site keep my document?
No. Documents are saved neither on the server nor in the offline cache. Download a copy to keep locally.
A reader that also works offline
After the first load, you can open documents offline. Only public application resources are saved, never your files.
Preparing offline availability…
No purchase is needed for the reader available today.
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