I've started using google pagespeed service and now when I check my site on http://validator.w3.org/ with doctype HTML5 and encoding UTF8 - I'm getting more than 80+ errors and 95% of them are errors to do with pagespeed
Egs of errors are
Attribute pagespeed_no_defer not allowed on element script at this point
Attribute pagespeed_lazy_src not allowed on element img at this point
Any idea what I should do about these
Thanks