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The Universal Product Code is a barcode symbology that is widely used worldwide for tracking trade items in stores.
The Barcode generator tool lets you create a Barcode signatures that you can download and use to sign business contracts and official XLS documents. Any Barcode contains unique textual information that confirms the identity of the signer or authorizes the business document. Barcode verification can be performed automatically by reading the signature content. The signatures content may vary depending on the Barcode or QR Code types. For example, barcodes allow to keep about 10-15 characters. The GroupDocs Generator tool allows you to generate electronic signatures from any browser for free without registration. GroupDocs will be happy to help you with the electronic signature generation and their usage on your documents.
Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel are known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images and charts.
ReadMoreYou can also sign other file formats. Please see the list below.