PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management.
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XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.
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You can also sign other file formats. Please see the list below.