SGI file (SGI) stores data in the SGI format. XLS file (XLS) stores data in the XLS format. This extracts structured tabular data from the document into an editable spreadsheet format. Metadata such as creation date and embedded colour profiles is preserved where the target format supports it. The result is a standard XLS file readable by any compatible application. 1converter handles SGI-to-XLS conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.