Click the "Select File" button above, and choose your SDO file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert SDO to another file type
To convert SDO Documents to another format, you need Visma Addo or other Data software.
Convert a file to SDO
To convert other file formats to the "Signed Document Container" file type, you need software like Visma Addo or a similar tool.
About SDO files
An .sdo file is primarily a Signed Document Object used as an electronically signed document container. It is heavily utilized by digital signature services like Visma Addo, Signicat, and SmartDocuments. Under the hood, these files are often packaged as standard XML or ZIP archives containing the original agreement and a cryptographic signature. Other minor variations of the .sdo extension include electrochemical experiment data files for IviumSoft and textile weaving designs for EAT DesignScope.
Users often need to convert or extract these files to access the original signed document for archiving or sharing. However, e-signature containers are highly proprietary and purpose-built. They are locked down to prevent tampering, meaning you cannot easily read the contents without breaking the signature validation. Scientific and manufacturing variants require specialized, expensive software to interpret the data. Standard web browsers and document editors cannot open them directly.
If the file is an XML or ZIP container, extracting the contents or converting to PDF is the best way to read the document text. Be aware that extracting the contents will separate the document from its cryptographic signature, invalidating its legal proof of integrity.
Because these are closed, proprietary, or encrypted formats, standard online converters usually fail. Often, only the original software can properly read, validate, or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your SDO file, detects the exact format, and lets you read the text inside.
If you want to convert SDO file to PDF, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use Visma Addo or similar software from the "Electronically Signed Document Container" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to SDO, try Visma Addo or another comparable tool in the "Electronically Signed Document Container" category.
The SDO Converter Story
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 SDO converter.