Migrating HTML to DITA

You can use the DITA Open Toolkit to migrate HTML to DITA. The migration tools are located in the demo\h2d directory. The tools are updated version of the tools created by Robert D. Anderson and published on developerWorks in 2005. The "Related information" section contains links to the original developerWorks articles, which contain detailed information about these tools and how to extend them.
Related information
Migrating HTML to DITA, Part 1: Simple steps to move from HTML to DITA
Migrating HTML to DITA, Part 2: Extend the migration for more robust results