Hello I have developed a website that will need to be able to convert large quantities (1000+) docx files to HTML. I have been looking at a few systems to do this and phpLiveDocx seems like a good choice. However the free version can only convert 250 documents per day. Are there any free alternatives to phpLiveDocx that can convert DOCX to HTML?

I had been trying to write my own system but the formatting for the document.xml file in a DOCX zip is confusing. The bold tags simply open and never close, same with many of the other tags. So in addition to alternatives to phpLiveDocx can anyone provide documentation for the XML structure of a document.xml file in a word docx file?

Also currently I am running this beta website off my laptop as it is in the testing phase. My laptop is a Windows and the server it will be moved to is a Linux. It would be better if this file conversion system is entirely PHP driven. No executables as the OS will be changing.