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XLTX files are Excel templates using the Open XML format, designed for creating consistent spreadsheets. They store predefined layouts, formatting, styles, and formulas, enabling users to generate standardized workbooks efficiently. Introduced with Excel 2007, these templates are secure as they lack macro support, making them ideal for sharing across organizations. They simplify repetitive tasks like financial reports or data entry forms.
You can also parse many other file formats. Please see the complete list below.