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Optimize scroll performance, font loading, and script execution #104

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0eb0cbe
Initial plan
Copilot Oct 24, 2025
f5ce449
Optimize scroll event performance and font loading
Copilot Oct 24, 2025
d4cc97a
Add defer to scripts and respect reduced motion preferences
Copilot Oct 24, 2025
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6 changes: 4 additions & 2 deletions _includes/head.html
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Expand Up @@ -20,9 +20,11 @@

<link rel="preload" as="style" href="{{ " /assets/css/style.css" | relative_url }}">
<link rel="stylesheet" href="{{ " /assets/css/style.css" | relative_url }}">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link rel="dns-prefetch" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="preload" as="style" href='https://fonts.googleapis.com/css2?family=EB+Garamond&display=swap'>
<link href="https://fonts.googleapis.com/css2?family=EB+Garamond&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=EB+Garamond&display=swap" rel="stylesheet" media="print" onload="this.media='all'">
<noscript><link href="https://fonts.googleapis.com/css2?family=EB+Garamond&display=swap" rel="stylesheet"></noscript>
<link
href="data:image/x-icon;base64,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"
rel="icon" type="image/x-icon" />
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4 changes: 2 additions & 2 deletions _layouts/home.html
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ <h2>Design Director at GitHub Copilot <span class="ampersand">&amp;</span> start
{% include home-navigation.html %}
{% include home-work.html %}

<script type="text/javascript" src="/assets/js/ios.js"></script>
<script type="text/javascript" src="/assets/js/s.js"></script>
<script defer src="/assets/js/ios.js"></script>
<script defer src="/assets/js/s.js"></script>
</body>
</html>
7 changes: 6 additions & 1 deletion _sass/_base.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,12 @@

html {
font-size: 62.5%;
scroll-behavior: smooth;
}

@media (prefers-reduced-motion: no-preference) {
html {
scroll-behavior: smooth;
}
}

body, h1, h2, h3, h4, h5, h6,
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43 changes: 25 additions & 18 deletions assets/js/s.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
if (isHome) {
let arrow = document.querySelector('.home-intro-scroll');
const arrowTreshold = 100; // when stops being visible
let ticking = false;

// scroll hint
function showScrollHint(seconds) {
Expand All @@ -19,10 +20,20 @@
}
}

// scrolling event
document.addEventListener("scroll", scrollHandler);
// scrolling event with requestAnimationFrame throttling
document.addEventListener("scroll", scrollHandler, { passive: true });

function scrollHandler() {
if (!ticking) {
window.requestAnimationFrame(function() {
updateScrollPosition();
ticking = false;
});
ticking = true;
}
}

function updateScrollPosition() {
// scroll hint
let scroll = document.scrollingElement.scrollTop;

Expand All @@ -41,21 +52,19 @@
// HELPERS: scrolling function from A -> B (modified from: https://bit.ly/2H3JKMV)
function scrollToItem(destination, duration = 500, extraPadding) {
const start = window.pageYOffset;
const startTime = "now" in window.performance ? performance.now() : new Date().getTime();
const startTime = performance.now();
const documentElement = document.documentElement;
const body = document.body;

const documentHeight = Math.max(
document.body.scrollHeight,
document.body.offsetHeight,
document.documentElement.clientHeight,
document.documentElement.scrollHeight,
document.documentElement.offsetHeight
body.scrollHeight,
body.offsetHeight,
documentElement.clientHeight,
documentElement.scrollHeight,
documentElement.offsetHeight
);
const windowHeight =
window.innerHeight ||
document.documentElement.clientHeight ||
document.getElementsByTagName("body")[0].clientHeight;
const destinationOffset =
typeof destination === "number" ? destination : destination.offsetTop;
const windowHeight = window.innerHeight || documentElement.clientHeight || body.clientHeight;
const destinationOffset = typeof destination === "number" ? destination : destination.offsetTop;
let destinationOffsetToScroll = Math.round(
documentHeight - destinationOffset < windowHeight
? documentHeight - windowHeight
Expand All @@ -65,15 +74,13 @@
destinationOffsetToScroll -= extraPadding;
}

if ("requestAnimationFrame" in window === false) {
if (!window.requestAnimationFrame) {
window.scroll(0, destinationOffsetToScroll);
return;
}

function scroll() {
const now =
"now" in window.performance ? performance.now() : new Date().getTime();

const now = performance.now();
const time = Math.min(1, (now - startTime) / duration);
const timeFunction = 0.5 * (1 - Math.cos(Math.PI * time));
window.scroll(
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