Excel XLS editor web browser extension

OffiDocs launches the web browser extension EXCEL XLS editor:

A Web extension for creating and editing xls excel spreadsheets. Web extension available in Chrome WebStore and FireFox Addon: 

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Excel XLS Editor is an extension that allows to create, edit and view any Microsoft Excel document in both XLS and XLSX format. It also handles the standard Open Office format ODS. It is an integration with LibreOffice Online and a file manager. 

Excel XLS Editor main features are:

- A direct link to create xls, xlsx or off spreadsheets with this Excel XLS Editor.

- It intercepts when you access to xls,  xlsx, csv or odf spreadsheets, and it automatically opens it directly using this Excel XLS Editor.

- Edit and view XLS spreadsheets written using OpenOffice Calc, LibreOffice Calc or Microsoft Excel.

- Styles management.

- Font sizes.

- Font colours.

- Background colours.

- Search for texts.

- Insert columns / rows / tables / images..

- Delete rows / columns.

- Advanced find & replace / regular expressions / special characters.

- Spreadsheet functions.

- Export to PDF.

- Auto save files.

- Open source code.

- Supports multiple formats for spreadsheets that are detailed here https://wiki.openoffice.org/wiki/Documentation/OOo3_User_Guides/Getting_Started/File_formats. 

      * Microsoft Excel 97/2000/XP (.xls)

      * Microsoft Excel 4.x–5.0/95 (.xls)

      * Microsoft Excel 2007 XML (.xlsx)

      * LibreOffice ODF spreadsheet (.ods)

      * OpenOffice ODF spreadsheet (.ods)

      * Text and CSV (.csv and .txt)

- Handle files and directories in the Cloud.

- Operations with files and folders: copy, move, upload, create folder/file,  etc

- Search for files