Microsoft Tools to Save InfoPath Forms as HTML

Using the HTML to XHTML Conversion Tool

The Microsoft Office InfoPath 2003 Software Development Kit (SDK) HTML to XHTML conversion tool allows you to convert regular HTML into well-formed XHTML that can be edited in an InfoPath form.

https://msdn.microsoft.com/library/en-us/ipsdk/html/ipsdkusingthehtmltoxhtmltool.asp

Using the Downlevel Tool

The Microsoft Office InfoPath 2003 Software Development Kit (SDK) Downlevel tool is a script-based command-line utility that is used to generate an HTML downlevel view of an InfoPath form or the XML document that an InfoPath form produces.

https://msdn.microsoft.com/library/en-us/ipsdk/html/ipsdkUsingTheDownLevelTool.asp

https://msdn.microsoft.com/library/default.asp?url=/library/en-us/ipsdk/html/ipsdkUsingTheDownLevelTool.asp