Standards exist for a reason. If all the browsers and all the coders adhered to the same standards, every web page would look identical on every browser on every platform. We can do our part.
Upload your PSD file to psd2css Online, then check your generated HTML for XHTML standards adherance here:
after you get the XHTML validation, be sure to check for CSS validation too near the bottom of that same page.
Please let me know if you can generate an HTML file with psd2css Online that DOESN'T validate.
NOTE: Some of the libraries that we use for some of the features don't always validate. These libraries weren't written here at psd2css Online and aren't actually generated by our code generator. The code generated by our code generator is always CSS 2.1 and XHTML 1.0 Transitional compliant. You might want to take this into account when choosing what psd2css Online features to use on your web pages.