Other Popular HTML Validation Icons

Badge Image (click to enlarge)	Direct Image URL (copy this)	Best For
Classic blue “Valid HTML5” (most common)	https://www.w3.org/Icons/valid-html5	Standard choice
Blue version with outline	https://www.w3.org/Icons/valid-html5-blue	Slightly larger text
Small modern badge (64×23 px)	https://www.w3.org/html/logo/badge/html5-badge-h-semanics.png	Compact
Even smaller (64×23 px, different style)	https://www.w3.org/html/logo/badge/html5-badge-h-semanics-graphics.png	Tiny spaces
Tall badge (88×62 px)	https://www.w3.org/html/logo/badge/html5-badge-h-css3-semantics.png	When you also want to hint at CSS3
Green “HTML5 Powered” shield	https://www.w3.org/html/logo/badge/html5-badge-h-aria.png	Alternative look
Very small 32×32 icon	https://www.w3.org/Icons/valid-html5-32.png	Footer corners
16×16 tiny icon	https://www.w3.org/Icons/valid-html5-16.png	Micro use

>      <img src="https://www.w3.org/Icons/valid-html5" width="88" height="31" alt="Valid HTML5">    </a>   </p>     <!-- 2. Small modern badge -->   <p style="text-align:center; margin:20px 0;">    <a href="https://validator.w3.org/nu/?uri=referer" target="_blank" rel="noopener">      <img src="https://www.w3.org/html/logo/badge/html5-badge-h-semanics.png" width="64" height="23" alt="Valid HTML5">    </a>   </p>     <!-- 3. Tiny 32×32 version -->   <p style="text-align:center; margin:20px 0;">    <a href="https://validator.w3.org/nu/?uri=referer" target="_blank" rel="noopener">       

Pick whichever style matches your page design — they all do exactly the same job.
Just copy, paste, and you’re done!