| products/Sources/formale Sprachen/C/Firefox/testing/web-platform/tests/png/apng/fdAT-8bit-gray.html |
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<! DOCTYPE html>
< html class= "reftest-wait">
< meta charset= "utf-8">
< title>PNG Third Edition: animated PNG, bit depth. 8bit grayscale</ title>
< link rel= "author" title= "Philip Taylor" href= "mailto:excors@gmail.com">
< link rel= "author" title= "Chris Lilley" href= "mailto:chris@w3.org">
< link rel= "help" href= "https://www.w3.org/TR/png-3/#apng-frame-based-animation">
< link rel= "help" href= "https://www.w3.org/TR/png-3/#fdAT-chunk">
< link rel= "match" href= "apng-graywhite-rectangle-ref.html">
< meta name= "assert" content= "It utilizes the same bit depth, colour type, compression method, filter method, interlace method, and palette (if any) as the static image.">
< script>
const el = document.querySelector( ".reftest-wait");
setTimeout(() => {
el.classList.remove( 'reftest-wait');
}, 2100);
</ script>
< style>
.test {
width: 128px;
height: 64px;
background-color: white;
background-image:
linear-gradient( 45deg, #ccc 25%, transparent 25%),
linear-gradient(- 45deg, #ccc 25%, transparent 25%),
linear-gradient( 45deg, transparent 75%, #ccc 75%),
linear-gradient(- 45deg, transparent 75%, #ccc 75%);
background-size: 16px 16px;
background-position: 0 0, 0 8px, 8px - 8px, - 8px 0px;
}
</ style>
< body>
< p>Test passes if you see a gray rectangle, with a white rectangle in the middle, and no red.</ p>
< div class= "test">< img src= "support/034.png" alt= ""></ div>
</ body>
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(vorverarbeitet am 2026-11-08)
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*© Formatika GbR, Deutschland
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