2021-11-21 19:12:16 +00:00
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<html>
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<head>
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<meta charset="utf-8" />
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2021-11-23 20:49:50 +00:00
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<script type="module" src="./wasm_exec.js"></script>
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<script type="module" src="./main.js"></script>
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2021-11-21 19:12:16 +00:00
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<style>
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@media (prefers-color-scheme: dark) {
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body {
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color: #fff;
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background: #000;
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}
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a:link {
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color: #9cf;
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}
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a:hover,
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a:visited:hover {
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color: #cef;
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}
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a:visited {
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color: #c9f;
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}
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}
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body {
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margin: 1em auto;
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max-width: 40em;
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padding: 0 0.62em;
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font: 1.2em/1.62 sans-serif;
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}
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h1,
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h2,
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h3 {
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line-height: 1.2;
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}
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.container {
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display: flex;
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flex-direction: column;
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justify-content: center;
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}
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#output {
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max-width: 100%;
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align-self: center;
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2021-12-11 15:25:21 +00:00
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image-rendering: optimizeSpeed; /* Legal fallback */
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image-rendering: -moz-crisp-edges; /* Firefox */
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image-rendering: -o-crisp-edges; /* Opera */
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image-rendering: -webkit-optimize-contrast; /* Safari */
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image-rendering: optimize-contrast; /* CSS3 Proposed */
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image-rendering: crisp-edges; /* CSS4 Proposed */
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image-rendering: pixelated; /* CSS4 Proposed */
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-ms-interpolation-mode: nearest-neighbor; /* IE8+ */
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2021-11-21 19:12:16 +00:00
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}
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@media print {
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body {
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max-width: none;
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}
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}
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</style>
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</head>
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<body>
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<article>
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<h1>Go+Wasm image dithering tool</h1>
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<aside>Featuring the Nord Color Palette</aside>
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<p>
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Load an image, click Go and wait (potentially for a while) for the image
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to be dithered using the Nord color palette and the Floyd-Steinberg
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algorithm.
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</p>
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<p>
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2021-11-23 20:49:50 +00:00
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Running in the browser with Wasm causes a bit of a performance penalty.
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Multithreading is not available (not that it matters much since
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Floyd-Steinberg is single-threaded), and sending data back and forth
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between JS and Wasm can take a little while.
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</p>
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<p>
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I've re-used code from
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<a
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href="https://www.sitepen.com/blog/using-webassembly-with-web-workers"
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>this article</a
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>
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to make the Wasm code run in a web worker, with some adaptations for Go
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oddities.
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2021-11-21 19:12:16 +00:00
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</p>
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<p>
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If you're into that sort of thing, source code is available on
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<a href="https://github.com/CrispyBaguette/wasm-palette-converter"
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>GitHub</a
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>.
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</p>
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<form>
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<input type="file" id="source-image" accept="image/png, image/jpeg" />
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2021-11-23 20:49:50 +00:00
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<button id="go-btn" type="button" disabled>Go</button>
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2021-11-21 19:12:16 +00:00
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</form>
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2021-11-23 20:49:50 +00:00
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<a id="output-wrapper" download="output.png">
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<div class="container">
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<img id="output" />
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</div>
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</a>
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2021-11-21 19:12:16 +00:00
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</article>
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</body>
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</html>
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