Extract text from electronic invoices (XSIG)
To convert XSIG invoices to another format, you need Facturae Desktop Client or other Data software.
To convert other file formats to the "XML Signature File" file type, you need software like Facturae Desktop Client or a similar tool.
A .xsig file is an XML container primarily utilizing the XML Advanced Electronic Signature (XAdES) standard. Its dominant use case is within the Factura-e system, the mandatory electronic invoicing format established by the Spanish Government for public administration contractors. The file securely embeds both structured financial invoice data and a cryptographic digital signature to guarantee authenticity and non-repudiation.
To interact with these files, users typically rely on official government portals, the Facturae desktop application, or enterprise signature managers like Indra Portafirmas. The underlying XAdES framework is a widely adopted European standard for digital signatures.
The main drawback of the .xsig format is its rigid, machine-readable structure. Because it consists of raw XML interspersed with Base64-encoded cryptographic hashes, it is functionally illegible to humans. Users cannot easily view the invoice details in a standard web browser or print the file directly. Standard accounting tools often reject the file without a specialized parser, making basic invoice processing frustrating for small business owners.
For human readability and printing, convert .xsig to PDF. This strips the unreadable cryptographic code and formats the invoice data into a standard visual layout. For data ingestion into databases, convert to standard XML or CSV. Note that any conversion will discard the cryptographic signature validation, so the original file must be kept for legal compliance.
Convert.Guru analyzes your XSIG file, detects the exact format, and lets you read the text inside.
Users also converted PDF, NONAME, XLSX, QRP, XML, SIG, UDF, ZIP, ENC and CSIG files.
If you want to convert XSIG file to , you can use Facturae Desktop Client or similar software from the "Electronic Invoice & Signature" category. In the File menu, look for Save As… or Export….
To convert files to XSIG, try Facturae Desktop Client or another comparable tool in the "Electronic Invoice & Signature" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our XSIG converter.