otackeI am not only working on #H5P content types, you know? Using an upcoming library/tool, you should be able to check your H5P files for potential issues shortly. It will cover things such as informing about missing license information, detecting image files that are larger than needed, list features such as resume or xAPI that are supported by the content (type), and it will also include info about known accessibility issues via external reports.
The tool is supposed to be made available via plugins for common platforms such as #WordPress, #Moodle or #Drupal in order to allow self-hosting.
All components are open source software, so developers are free to reuse them completely or replace what they need to have it their way (e.g. use the server-side library, but have a different client). Vendors of #H5P integrations are welcome to include this in their H5P plugin/environment!
And the tool will be brought to you by #NDLA, by the way!
villon