How do I open a .XLSB file?

Drop a .XLSB file onto Analyser at https://lab.valjdakosta.com/ and it opens directly in your browser - no upload, no account and no software to install. Open and read Microsoft Office documents - modern Word, Excel and PowerPoint (DOCX, XLSX, PPTX), their template, macro-enabled and slideshow variants (DOTX, XLTX, POTX, DOCM, XLSM, PPTM, PPSX), the binary Excel workbook (XLSB), and the legacy 97-2003 binaries (DOC, XLS, PPT) - plus the OpenDocument family in every shape: zipped and flat single-XML text, spreadsheets, presentations and graphics (ODT, ODS, ODP, ODG, FODT, FODS), templates (OTT, OTS, OTP, OTG), legacy StarOffice (SXW, SXC, SXD), and EPUB e-books, shown as page previews with selectable text, tables, sheets and slides.

Can I open a .XLSB file online for free?

Yes. Analyser is a free online .XLSB opener and viewer that runs entirely in your browser - your .XLSB file never leaves your device, so there is nothing to upload and no software to install. It even works offline once installed.

.XLSB file - what it is and how to open it online

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What is a .XLSB file?

XLSB is the binary version of a Microsoft Excel workbook, storing cells in the compact BIFF12 record format instead of XLSX’s XML. It opens and recalculates faster and makes smaller files, so it is popular for very large spreadsheets.

Did you know: XLSB arrived with Excel 2007 alongside XLSX; the two hold the same data, but the binary XLSB opens noticeably faster on big workbooks.
Analyser handles .XLSB alongside related formats such as .DOCX, .DOCM, .DOTX and more.
In Analyser's format library, .XLSB sits in the Documents & e-books category.
What Analyser shows you: Open and read Microsoft Office documents - modern Word, Excel and PowerPoint (DOCX, XLSX, PPTX), their template, macro-enabled and slideshow variants (DOTX, XLTX, POTX, DOCM, XLSM, PPTM, PPSX), the binary Excel workbook (XLSB), and the legacy 97-2003 binaries (DOC, XLS, PPT) - plus the OpenDocument family in every shape: zipped and flat single-XML text, spreadsheets, presentations and graphics (ODT, ODS, ODP, ODG, FODT, FODS), templates (OTT, OTS, OTP, OTG), legacy StarOffice (SXW, SXC, SXD), and EPUB e-books, shown as page previews with selectable text, tables, sheets and slides.
Open a .XLSB file: Drag a .XLSB file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
Related formats: .DOCX · .DOCM · .DOTX · .DOTM · .XLSX · .XLSM · .XLTX · .XLTM · .PPTX · .PPTM · .PPSX · .PPSM · .POTX · .POTM · .ODT · .OTT · .FODT · .ODS and more. See all supported file types.