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index.html
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<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>LazyLoad example of usage with srcset and sizes</title>
<link rel="stylesheet" href="css/style.css">
<script>
// Picture element HTML5 shiv
document.createElement("picture");
</script>
<script src="js/vendor/picturefill/dist/picturefill.min.js" async></script>
</head>
<body>
<div class="container">
<header>
<h1>Picture vs img with srcset and sizes</h1>
</header>
<section>
<h2>Picture tag</h2>
<ul class="products cf">
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
<li>
<picture>
<source media="(max-width: 320px)"
srcset="http://placehold.it/320x372 2x">
<source media="(max-width: 375px)"
srcset="http://placehold.it/374x435 2x">
<source media="(max-width: 568px)"
srcset="http://placehold.it/568x660 2x">
<source media="(max-width: 667px)"
srcset="http://placehold.it/666x774 2x">
<source media="(max-width: 768px)"
srcset="http://placehold.it/472x549 2x">
<source media="(max-width: 1024px)"
srcset="http://placehold.it/241x280 1x, http://placehold.it/482x560 2x">
<source media="(min-width: 1280px)"
srcset="http://placehold.it/305x355 1x, http://placehold.it/610x709 2x">
<img src="http://placehold.it/305x355" alt="A product image">
</picture>
</li>
</ul>
</section>
<section>
<h2>Img Tag</h2>
<ul class="products cf">
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
<li><img src="http://placehold.it/305x355"
srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w"
sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw"
alt="A product image"></li>
</ul>
</section>
<section class="result">
<h1>Conclusions</h1>
<p>See <a href="https://github.com/verlok/responsiveImagesTagsCompared/blob/gh-pages/README.md">README.md</a> file on this repo.</p>
</section>
</div>
</body>
</html>