Techtalkthai.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Bad value “https://ad.doubleclick.net/ddm/ad/N7940.2040310TECHTALKTHAI/B8993296.121694142;sz=1x1;ord=[timestamp]?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Thai but the “html” start tag has “lang="en-US"”. Consider using “lang="th"” (or variant) instead.
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