Website Thumbnail iFrames

Method from https://medium.com/@jamesfuthey/simulating-the-creation-of-website-thumbnail-screenshots-using-iframes-7145269891db

Embedding these (and Otterframes or other iFrames) in Popup Footnotes and Slide-Ins is good, as the remote sites only load when triggered and do not slow down the site.

<div style="text-align:center">
<a href="https://microchic.fm" rel="dd">
<div class="i-thumbnail-container" title="https://microchic.fm -->">
<div class="i-thumbnail">
  <iframe src="https://microchic.fm/" frameborder="0" onload="var that=this;setTimeout(function() { that.style.opacity = 1 }, 500)"></iframe>
</div>
</div>
</a>

<a href="https://microchic.me" rel="dd">
<div class="i-thumbnail-container" title="https://microchic.me -->">
<div class="i-thumbnail">
  <iframe src="https://microchic.me/" frameborder="0" onload="var that=this;setTimeout(function() { that.style.opacity = 1 }, 500)"></iframe>
</div>
</div>
</a>
</div>

<style> /* This is the contents of /partials/iframe-thumbnail.hbs (included in post.hbs) */

/* This container helps the thumbnail behave as if it were an unscaled IMG element */
.i-thumbnail-container {
  width: calc(1440px * 0.25);
  height: calc(900px * 0.25);
  display: inline-block;
  overflow: hidden;
  position: relative;
  background: #f9f9f9;
}
/* Image Icon for the Background */
.i-thumbnail-container::before {
  position: absolute;
  left: calc(50% - 16px);
  top: calc(50% - 18px);
  opacity: 0.2;
  display: block;
  -ms-zoom: 2;
  -o-transform: scale(2);
  -moz-transform: scale(2);
  -webkit-transform: scale(2);
  content: url("data:image/svg+xml;base64,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");
}
/* This is a masking container for the zoomed iframe element */
.i-thumbnail {
  -ms-zoom: 0.25;
  -moz-transform: scale(0.25);
  -moz-transform-origin: 0 0;
  -o-transform: scale(0.25);
  -o-transform-origin: 0 0;
  -webkit-transform: scale(0.25);
  -webkit-transform-origin: 0 0;
}
/* This is our screen sizing */
.i-thumbnail,
.i-thumbnail iframe {
  width: 1440px;
  height: 900px;
}
/* This facilitates the fade-in transition instead of flicker. It also helps us maintain the illusion that this is an image, since some webpages will have a preloading animation or wait for some images to download */
.i-thumbnail iframe {
  opacity: 0;
  transition: all 300ms ease-in-out;
}
/* This pseudo element masks the iframe, so that mouse wheel scrolling and clicking do not affect the simulated "screenshot" */
.i-thumbnail:after {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

</style>