Holmsie is a simple HTML(5) problems detector for Mozilla Firefox. It uses the holmes CSS diagnostic stylesheet to highlight potentially invalid, inaccessible or erroneous HTML(5) markup.
Check out the holmes website at http://red-root.com/sandbox/holmes/ for further information.
This page is part of the LegacyCollector website.
Disclaimer: All material on this site is property of their respective owners and available under
open licenses to the best of our knowledge. If you are an author and would like anything removed,
then please write an e-mail to legacy [at] collector dot org.