Open any signed document online

Try it on a file you already have. SignedDocs opens signed documents in the browser so you can read the document and download a copy. Nothing is uploaded.

Which signed documents you can open

A signed document is a container. The readable file sits inside a signature, a timestamp or a seal. The name is often wrong: people rename files, sign them twice, or receive them as text. SignedDocs looks at the bytes.

These containers show up in mail and on government portals: .p7m, .xml.p7m, .pdf.p7m, .p7s, .tsd, .m7m, .zfo, .es3, .et3, .xades, .sig, .xsig, .csig, .asice, .bdoc, .sce and .adoc. Some are only a signature. Some are encrypted and need the recipient’s key. Some hold several files.

• .p7m and .pdf.p7m — a document inside a CMS signature, common in Italian PEC mail
• .p7s — often a signature without the document, including smime.p7s
• .tsd and .m7m — a timestamp around a file
• .zfo — a Czech data-box message
• .es3, .xades, .xsig, .asice and .adoc — signed XML and ZIP packages from Hungary, Poland, Spain, the Baltics and beyond

What you get back

You get the document that was inside, a PDF preview when the payload is a PDF, and the name on the signature. Download the extracted file, download the original, or print the PDF. The extracted PDF is a copy of the content. The original file is the proof of the signature, so save that too. This is not a legal validation, and SignedDocs is not a government body.

Know the format already?

Each format has its own page with a short guide, the questions people ask about it and the same field. Use the All formats menu in the header, or start from the SignedDocs home page to see which format matches where your file came from.