Supsindex · Embeddable widget
Certificate Verification Widget
Add Supsindex certificate verification to your own website. Your visitors enter a Supsindex certificate ID and instantly see whether it's valid — no account, no redirects, fully on your page.
Embed it in three steps
- Copy the code snippet below.
- Paste it into your page's HTML, wherever you want the widget to appear.
- Publish — the verification widget is now live on your site.
<!-- Supsindex Certificate Verification Widget -->
<div id="supsindex-cert-widget" style="width:100%;max-width:900px;margin:0 auto;background:transparent;">
<iframe
src="https://devcs.supsindex.com/verify-embed"
style="width:100%;height:100%;min-height:600px;border:none;border-radius:16px;background:transparent;overflow:auto;"
allow="accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
loading="lazy"
scrolling="yes"
title="Certificate Verification"
></iframe>
</div>
<script>
(function() {
window.addEventListener('message', function(event) {
if (event.data && event.data.type === 'resize') {
const iframe = document.querySelector('#supsindex-cert-widget iframe');
if (iframe && event.data.height) {
iframe.style.height = event.data.height + 'px';
}
}
});
function requestHeight() {
const iframe = document.querySelector('#supsindex-cert-widget iframe');
if (iframe) {
try {
iframe.contentWindow.postMessage({ type: 'getHeight' }, '*');
} catch(e) {}
}
}
window.addEventListener('load', function() {
setTimeout(requestHeight, 500);
});
window.addEventListener('resize', function() {
setTimeout(requestHeight, 300);
});
})();
</script>Works anywhere you can add custom HTML — WordPress, Webflow, Wix, Squarespace, or a plain HTML page. The widget auto-resizes to fit its content.
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