Parser and writer for various spreadsheet formats. Pure-JS cleanroom implementation from official specifications, related documents, and test files. Emphasis on parsing and writing robustness, cross-format feature compatibility with a unified JS representation, and ES3/ES5 browser compatibility back to IE6.

This is the community version. We also offer a pro version with performance enhancements, additional features like styling, and dedicated support.

Monthly Downloads: 0
Programming language: JavaScript
License: Apache License 2.0
Tags: Data     Spreadsheet     excel    
Latest version: v0.18.11

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The SheetJS Community Edition offers battle-tested open-source solutions for extracting useful data from almost any complex spreadsheet and generating new spreadsheets that will work with legacy and modern software alike.

SheetJS Pro offers solutions beyond data processing: Edit complex templates with ease; let out your inner Picasso with styling; make custom sheets with images/graphs/PivotTables; evaluate formula expressions and port calculations to web apps; automate common spreadsheet tasks, and much more!

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Related Projects

  • https://oss.sheetjs.com/notes/: File Format Notes

  • [ssf](packages/ssf): Format data using ECMA-376 spreadsheet format codes

  • [xlsx-cli](packages/xlsx-cli/): NodeJS command-line tool for processing files

  • test_files: Sample spreadsheets

  • cfb: Container (OLE/ZIP) format library

  • codepage: Legacy text encodings


Please consult the attached LICENSE file for details. All rights not explicitly granted by the Apache 2.0 License are reserved by the Original Author.

*Note that all licence references and agreements mentioned in the SheetJS js-xlsx README section above are relevant to that project's source code only.