# [SheetJS](https://sheetjs.com) 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](https://sheetjs.com/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! ## Documentation - [API and Usage Documentation](https://docs.sheetjs.com) - [Downloadable Scripts and Modules](https://cdn.sheetjs.com) ## Constellation - : 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 - [`cfb`](https://git.sheetjs.com/SheetJS/js-cfb): Container (OLE/ZIP) file processing library - [`codepage`](https://git.sheetjs.com/SheetJS/js-codepage): Legacy text encodings for XLS and other legacy spreadsheet formats - [`dta`](packages/dta): Stata DTA file processor - [`test_files`](https://github.com/sheetjs/test_files): Test files and various plaintext baselines. ## License 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.