SignedDocs

SignedDocs is a web-based tool that helps users open and understand digitally signed document formats they cannot normally access. Simply drop your .p7m, .p7s, .tsd, .zfo, .es3, or other signed file into the browser, and SignedDocs reads it locally on your device without uploading, providing a free preview and signer details.

The service supports multiple international digital signature formats used across Italy, Germany, Poland, Ukraine, Czechia, and Hungary. It automatically detects file formats, extracts embedded documents, displays signature information, and explains what each format is used for and who it suits. Users can preview documents and see signer details with a free account, with paid options for downloading extracted documents and PDF conversions.

SignedDocs is ideal for professionals, businesses, and individuals who receive digitally signed documents from suppliers, government agencies, or official sources but lack the specialized software to open them.