ONLINE WORD DOCUMENT EDITOR

We need a software to create/Edit Microsoft word document online. It should be compatible with Microsoft word. For example I entered data in an online document editor after completion of my job I can export that as word or pdf. When the document is exported as word then I should be able to open the document in Microsoft office desktop or online version. I should be able to copy my current word documents in 2007, 2010 or 2013 and paste in the online editor, I can make the changes online. In the same way once exported from online editor I can open the same document in my local desktop office version and paste the same back in online editor The solution should have the Features should be available as per microsoft word 2013 but not limited to below Ability to set page size like A4, B12, A6, letter etc. Once page size is set, all the content in the editor should be split into pages with a page break as per set page size. Ability to set left, right, top and bottom margins Ability to add header and footer Page numbering Ability to add tables Ability to add images Ability to select font, size, Headline 1/2/3/4, bold, italic, underline, background color, font color Ability to insert links Template Selection from the existing defined templates Change case of select word or line (upper case, lower case, sentence case, title case, toggle case) Undo, redo, cut, copy, paste Copy format from one location and apply on other location Indentation – decrease and increase Set line spacing Insert shapes Insert images Water mark Page color Ability to insert contents page Display page horizontal and vertical scale (Ruler). Zoom Ability to drag and drop text Ability to set custom page breaks Upon document save, output should be generated as XHTML Find and replace Spell checking