{{< blocks/products/cells/cells-cloud-banner h1="Convert XLSX to XLSB" h2="Ruby library for converting XLSX to XLSB" p="Use the Conversion API of of Cells Cloud to create customized spreadsheet wor......to XLSB and other document formats online using Ruby." urlsec...%}} <br/> Converting file formats from XLSX to XLSB can be a...