# xlsx

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.

[**In-Browser Demo**](http://oss.sheetjs.com/js-xlsx)

[**Source Code**](http://git.io/xlsx)

[**Commercial Support**](http://sheetjs.com/reinforcements)

[**Rendered Documentation**](https://sheetjs.gitbooks.io/docs/)

[**File format support for known spreadsheet data formats:**](#file-formats)

![circo graph of format support](formats.png)

![graph legend](legend.png)