[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"extension:v3:en:xltx":3},{"resolvedFromAlias":4,"canonicalExt":5,"ext":5,"name":6,"category":7,"categoryName":8,"updatedAt":9,"popularity":10,"summary":11,"howToOs":12,"quickAnswer":18,"answerIntro":19,"whatIs":20,"description":21,"furtherReading":22,"openInstructions":41,"commonIssues":55,"securityNotes":74,"faq":78,"aliases":91,"mimeTypes":92,"relatedExtensions":94,"breadcrumbs":142,"categoryAnchor":152,"categoryFuturePath":153,"metaDescription":154,"availableHowToOs":155,"openOnDeviceLinks":156,"cannotOpenReasons":172,"cannotOpenFixes":173,"convertOptions":174,"securityAffiliateMessaging":175,"securityAffiliates":176},false,"xltx","Excel Open XML Template","documents","Documents","2026-06-12T09:21:48.130Z",55,".xltx is a Microsoft Excel template file in the Office Open XML (OOXML) family. Open it in Excel to create new workbooks prefilled with predefined layouts, styles, and settings.",[13,14,15,16,17],"windows","mac","linux","ios","android","To open .XLTX files on Windows, double-click the .xltx file to open it in Microsoft Excel.","To open a .xltx file, use Microsoft Excel (it’s an Excel template format in the Office Open XML family). When you open it, Excel typically creates a new workbook based on the template rather than editing the template directly.",".xltx is an Office Open XML SpreadsheetML template format used by Microsoft Excel. Technically it is an OOXML package containing XML parts that describe workbook structure, worksheets, styles, and related resources as defined by the OOXML/SpreadsheetML packaging model.",".xltx is the modern Excel template format used for distributing reusable spreadsheet designs—things like standardized report layouts, invoice templates, dashboards, or any workbook with preconfigured formatting and structure. Instead of starting from a blank workbook, users open a template to generate a new workbook with the template’s content and settings already in place.\n\nThe format belongs to the Office Open XML (OOXML) specification family standardized in ECMA-376. SpreadsheetML documents are stored as a packaged set of parts (XML files and related resources) that together describe the workbook, sheets, styles, and other elements.\n\nIn practical use, .xltx is preferred over older template formats when you need an interoperable OOXML-based template. It is distinct from macro-enabled templates (commonly .xltm): .xltx is the non-macro OOXML template variant.",[23,26,29,32,35,38],{"title":24,"url":25},"IANA Media Types: application/vnd.openxmlformats-officedocument.spreadsheetml.template","https://www.iana.org/assignments/media-types/media-types.xhtml",{"title":27,"url":28},"Microsoft Support: Open XML formats and file name extensions","https://support.microsoft.com/en-us/office/open-xml-formats-and-file-name-extensions-5200d93c-3449-4380-8e11-31ef14555b18",{"title":30,"url":31},"ECMA-376 Office Open XML standard (Ecma International)","https://ecma-international.org/publications-and-standards/standards/ecma-376/",{"title":33,"url":34},"Microsoft Learn: Structure of a SpreadsheetML document","https://learn.microsoft.com/en-us/office/open-xml/spreadsheet/structure-of-a-spreadsheetml-document",{"title":36,"url":37},"freedesktop.org shared-mime-info (Linux MIME mappings)","https://www.freedesktop.org/software/shared-mime-info/",{"title":39,"url":40},"Wikipedia: List of Microsoft Office filename extensions","https://en.wikipedia.org/wiki/List_of_Microsoft_Office_filename_extensions",{"windows":42,"macos":45,"linux":48,"ios":51,"android":53},[43,44],"Double-click the .xltx file to open it in Microsoft Excel.","If it opens in the wrong app: right-click the file → Open with → Excel (or Choose another app) → optionally set Excel as the default.",[46,47],"Double-click the .xltx file to open it in Microsoft Excel for Mac.","If prompted, choose Excel as the application to open the file and confirm.",[49,50],"If your Linux desktop recognizes the file, it may associate .xltx with the OOXML spreadsheet template MIME mapping (via shared-mime-info); try opening it from your file manager.","If you do not have compatible spreadsheet software installed, transfer the file to a system with Microsoft Excel to use the template reliably.",[52],"Open the .xltx from the Files app and choose Microsoft Excel if installed; the template should create a new workbook based on it.",[54],"Tap the .xltx in your file manager or email attachment and open it with Microsoft Excel if installed; it should generate a new workbook from the template.",[56,62,68],{"title":57,"description":58,"steps":59},"Opening the template creates a new workbook instead of letting you edit the template",".xltx is a template format; spreadsheet apps often treat it as a blueprint and create a new workbook from it when opened.",[60,61],"In Excel, use File → Open to open the template, then use File → Save As to save your changes back as a template (.xltx) if you intend to update the template itself.","If you only need a normal spreadsheet based on the template, save the newly created workbook as a regular Excel workbook (for example, .xlsx) with a new name.",{"title":63,"description":64,"steps":65},"File won’t open or reports corruption",".xltx is an OOXML package of multiple parts; if the package or any required XML part is damaged, Excel may fail to open it or warn about repairs.",[66,67],"Re-download or re-copy the file (corruption often happens during transfer or incomplete downloads).","Try opening it in Microsoft Excel and allow repair if offered, then immediately Save As a new file name.",{"title":69,"description":70,"steps":71},"It opens in the wrong application","Operating system file associations can be set incorrectly, especially if multiple office suites are installed.",[72,73],"Windows: right-click → Open with → Excel → set as default if desired.","macOS: select the file in Finder → Get Info → Open with → choose Excel → Change All.",[75,76,77],".xltx is the non-macro OOXML template type; macro-enabled templates are a different extension (commonly .xltm). If you expected macros, verify you received the correct file type.","Even without macros, .xltx is a complex packaged document format (OOXML/SpreadsheetML). Treat templates from unknown sources cautiously because malformed document packages can sometimes trigger application parsing issues.","Be careful when templates contain links or connections to external data sources: opening a workbook generated from a template may prompt to update links or retrieve external content, which can leak information or pull untrusted data depending on your settings.",[79,82,85,88],{"question":80,"answer":81},"What is an .xltx file used for?","It’s an Excel template: you open it to create a new spreadsheet that starts with predefined sheets, formatting, and settings.",{"question":83,"answer":84},"Is .xltx the same as .xlsx?","No. Both are OOXML SpreadsheetML-based, but .xltx is intended as a template. Opening it usually produces a new workbook based on the template rather than editing the template directly.",{"question":86,"answer":87},"Can .xltx contain macros?",".xltx is the non-macro OOXML template type; macro-enabled Excel templates use a different OOXML extension (commonly .xltm).",{"question":89,"answer":90},"What MIME type is associated with .xltx?","The IANA-registered media type for OOXML spreadsheet templates is application/vnd.openxmlformats-officedocument.spreadsheetml.template.",[],[93],"application/vnd.openxmlformats-officedocument.spreadsheetml.template",[95,101,107,113,119,124,130,136],{"ext":96,"name":97,"category":7,"categoryName":8,"popularity":98,"summary":99,"howToOs":100},"pdf","Portable Document Format",100,"PDF files maintain consistent formatting across devices and are widely used for documents that require a fixed layout, such as forms and reports.",[13,14,15,16,17],{"ext":102,"name":103,"category":7,"categoryName":8,"popularity":104,"summary":105,"howToOs":106},"docx","Microsoft Word Open XML Document",98,"DOCX files are widely used word-processing documents created by Microsoft Word, supporting rich text and multimedia elements.",[13,14,15,16,17],{"ext":108,"name":109,"category":7,"categoryName":8,"popularity":110,"summary":111,"howToOs":112},"xlsx","Microsoft Excel Open XML Spreadsheet",92,"XLSX files are widely-used spreadsheet files that store data, formulas, and charts, and are compatible with various spreadsheet applications.",[13,14,15,16,17],{"ext":114,"name":115,"category":7,"categoryName":8,"popularity":116,"summary":117,"howToOs":118},"log","Plain-text Log File",85,".log files are typically plain-text logs that record events, messages, and errors from software or operating systems. They can usually be opened with basic text editors on any platform.",[13,14,15,16,17],{"ext":120,"name":121,"category":7,"categoryName":8,"popularity":116,"summary":122,"howToOs":123},"pptx","Microsoft PowerPoint Open XML Presentation","PPTX files are widely used for creating and sharing presentation decks with multimedia content.",[13,14,15,16,17],{"ext":125,"name":126,"category":7,"categoryName":8,"popularity":127,"summary":128,"howToOs":129},"txt","Plain Text File",82,"TXT files contain plain text and can be opened on any operating system with a variety of text editors.",[13,14,15,16,17],{"ext":131,"name":132,"category":7,"categoryName":8,"popularity":133,"summary":134,"howToOs":135},"xlsm","Excel Macro-Enabled Workbook (Office Open XML)",75,".xlsm is an Office Open XML Excel workbook that can contain VBA macros. Open it in Microsoft Excel; be cautious because macros can run code.",[13,14,15,16,17],{"ext":137,"name":138,"category":7,"categoryName":8,"popularity":139,"summary":140,"howToOs":141},"ppsx","PowerPoint Show (Office Open XML Slideshow)",70,".ppsx is a Microsoft PowerPoint “Show” file that is designed to open directly in Slide Show mode instead of the normal editing view.",[13,14,15,16,17],[143,146,149],{"label":144,"to":145},"Home","/",{"label":147,"to":148},"File Extension Index","/file-extension",{"label":150,"to":151},".XLTX","/file-extension/xltx","category-documents","/category/documents","Learn what .XLTX files are, how to open them on every platform, common fixes, and security best practices.",[13,14,15,16,17],[157,160,163,166,169],{"os":13,"label":158,"to":159},"Open .XLTX on Windows","/how-to/open-xltx-on-windows",{"os":14,"label":161,"to":162},"Open .XLTX on Mac","/how-to/open-xltx-on-mac",{"os":15,"label":164,"to":165},"Open .XLTX on Linux","/how-to/open-xltx-on-linux",{"os":16,"label":167,"to":168},"Open .XLTX on iOS","/how-to/open-xltx-on-ios",{"os":17,"label":170,"to":171},"Open .XLTX on Android","/how-to/open-xltx-on-android",[57,63,69],[60,61],[],"untrusted_source",[177,181],{"name":178,"description":179,"affiliateUrl":180},"Avast","Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.","https://www.avast.com/lp-aff-consumer-store?expid=inf601",{"name":182,"description":183,"affiliateUrl":184},"Norton","Norton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.","http://buy.norton.com/aff_home?utm_campaign=en-ww_nor_n36_aff_nas_nau_nah_cj_nad_low:_sec_nat_mktc_norton_360"]