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#webperf

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Inautilo<p><a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/Overviews" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Overviews</span></a><br>Hack to the future · What past front-end approaches still teach us <a href="https://ilo.im/166f1r" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/166f1r</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/WebPlatform" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPlatform</span></a> <a href="https://mastodon.social/tags/Browser" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Browser</span></a> <a href="https://mastodon.social/tags/AI" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AI</span></a> <a href="https://mastodon.social/tags/Accessibility" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Accessibility</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Frontend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frontend</span></a> <a href="https://mastodon.social/tags/HTML" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HTML</span></a> <a href="https://mastodon.social/tags/CSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CSS</span></a> <a href="https://mastodon.social/tags/JavaScript" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JavaScript</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/Debates" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Debates</span></a><br>Stop trying to kill the Single-Page Application · “Reports of SPA’s death are greatly exaggerated.” <a href="https://ilo.im/166f1c" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/166f1c</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/SPA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SPA</span></a> <a href="https://mastodon.social/tags/Websites" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Websites</span></a> <a href="https://mastodon.social/tags/WebApplications" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebApplications</span></a> <a href="https://mastodon.social/tags/Astro" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astro</span></a> <a href="https://mastodon.social/tags/Frameworks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frameworks</span></a> <a href="https://mastodon.social/tags/JavaScript" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JavaScript</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Frontend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frontend</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/Guides" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Guides</span></a><br>Using the Safari developer tools · How to get started with Safari’s Web Inspector <a href="https://ilo.im/165xux" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/165xux</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/Safari" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Safari</span></a> <a href="https://mastodon.social/tags/WebInspector" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebInspector</span></a> <a href="https://mastodon.social/tags/Debugging" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Debugging</span></a> <a href="https://mastodon.social/tags/DevTools" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DevTools</span></a> <a href="https://mastodon.social/tags/Console" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Console</span></a> <a href="https://mastodon.social/tags/Browser" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Browser</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Frontend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frontend</span></a> <a href="https://mastodon.social/tags/JavaScript" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JavaScript</span></a></p>
Wagtail<p>5 terabytes for 30 seconds of homepage video 💥 is it worth it? (no) <a href="https://wagtail.org/blog/5-terabytes-for-30-seconds-of-homepage-video/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">wagtail.org/blog/5-terabytes-f</span><span class="invisible">or-30-seconds-of-homepage-video/</span></a> </p><p><a href="https://fosstodon.org/tags/webdev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webdev</span></a> <a href="https://fosstodon.org/tags/sustainability" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sustainability</span></a> <a href="https://fosstodon.org/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Design" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Design</span></a> <a href="https://mastodon.social/tags/Approaches" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Approaches</span></a><br>The beauty of a text-only webpage · “You’re contributing to a simple, calm, and happier internet.” <a href="https://ilo.im/1666f6" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/1666f6</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/Text" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Text</span></a> <a href="https://mastodon.social/tags/Content" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Content</span></a> <a href="https://mastodon.social/tags/Webpage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Webpage</span></a> <a href="https://mastodon.social/tags/Blog" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Blog</span></a> <a href="https://mastodon.social/tags/Website" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Website</span></a> <a href="https://mastodon.social/tags/Accessibility" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Accessibility</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/Hosting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hosting</span></a> <a href="https://mastodon.social/tags/SmallWeb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SmallWeb</span></a> <a href="https://mastodon.social/tags/IndieWeb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>IndieWeb</span></a></p>
Sia Karamalegos<p>July CWV performance data is now live for Shopify themes - see how yours does and the latest on Horizon <a href="https://themevitals.com/newsletter/2025-08/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">themevitals.com/newsletter/202</span><span class="invisible">5-08/</span></a></p><p><a href="https://front-end.social/tags/Shopify" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Shopify</span></a> <a href="https://front-end.social/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/Pitfalls" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Pitfalls</span></a><br>Server-side HTTP prioritization support · “Correct HTTP prioritization can’t always be relied upon.” <a href="https://ilo.im/165qa6" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/165qa6</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/HTTP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HTTP</span></a> <a href="https://mastodon.social/tags/HTTP2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HTTP2</span></a> <a href="https://mastodon.social/tags/HTTP3" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HTTP3</span></a> <a href="https://mastodon.social/tags/Server" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Server</span></a> <a href="https://mastodon.social/tags/CDN" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CDN</span></a> <a href="https://mastodon.social/tags/Browser" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Browser</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/DevOps" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DevOps</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Backend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Backend</span></a></p>
Leon Brocard<p>Sometimes I browse a website and find it's super fast, then check and find it is served by Fastly. I wrote about this on the Fastly blog and threw in some high-level web performance tips: <a href="https://www.fastly.com/blog/fastest-sites-run-on-fastly" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">fastly.com/blog/fastest-sites-</span><span class="invisible">run-on-fastly</span></a><br><a href="https://fosstodon.org/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/Analyses" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Analyses</span></a><br>The fastest site in the Tour de France · Which bike brand excelled in both browser and race? <a href="https://ilo.im/16600l" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/16600l</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/TourDeFrance" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TourDeFrance</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/WebPage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPage</span></a> <a href="https://mastodon.social/tags/Metrics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Metrics</span></a> <a href="https://mastodon.social/tags/WebVital" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebVital</span></a> <a href="https://mastodon.social/tags/CrRRUX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CrRRUX</span></a> <a href="https://mastodon.social/tags/Browser" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Browser</span></a> <a href="https://mastodon.social/tags/DevTools" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DevTools</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Frontend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frontend</span></a></p>
Leon Brocard<p>I dug into the HTTP Archive to see how many websites offer a Compression Dictionary. In July 2025 the only users were Google Search mobile and my personal website:<br>google.com, google.fr, google.com.pk, google.co.uk, google.co.id, google.com.co, google.co.jp, google.com.tr, google.com.ar, google.com.vn, google.it, google.ca, google.es, google.hu, google.de, google.ie, google.com.br, astray.com, google.rs, google.be, ...<br><a href="https://fosstodon.org/tags/http" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>http</span></a> <a href="https://fosstodon.org/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a></p>
Inautilo<p><a href="https://mastodon.social/tags/Design" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Design</span></a> <a href="https://mastodon.social/tags/Pitfalls" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Pitfalls</span></a><br>The current state of skeleton screens · ”Loading screens are not fooling anyone anymore.” <a href="https://ilo.im/165vxd" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">ilo.im/165vxd</span><span class="invisible"></span></a></p><p>_____<br><a href="https://mastodon.social/tags/Loading" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Loading</span></a> <a href="https://mastodon.social/tags/Content" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Content</span></a> <a href="https://mastodon.social/tags/Skeletons" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Skeletons</span></a> <a href="https://mastodon.social/tags/UxDesign" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UxDesign</span></a> <a href="https://mastodon.social/tags/UiDesign" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UiDesign</span></a> <a href="https://mastodon.social/tags/WebDesign" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDesign</span></a> <a href="https://mastodon.social/tags/WebPerf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebPerf</span></a> <a href="https://mastodon.social/tags/Development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Development</span></a> <a href="https://mastodon.social/tags/WebDev" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WebDev</span></a> <a href="https://mastodon.social/tags/Frontend" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frontend</span></a></p>
Leon Brocard<p>Anyone else using Compression Dictionary Transport to compress response bodies with a site-specific dictionary?<br>The first time you visit <a href="https://www.astray.com/recipes/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">astray.com/recipes/</span><span class="invisible"></span></a> in Chrome, the response body is compressed with Brotli and takes 2,186 bytes. In the background the browser downloads a 400 byte dictionary.<br>The next time you visit <a href="https://www.astray.com/recipes/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">astray.com/recipes/</span><span class="invisible"></span></a> the body is compressed with Brotli (using the shared dictionary) and takes only 1,799 bytes.<br>The savings add up with each request.<br><a href="https://fosstodon.org/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a> <a href="https://fosstodon.org/tags/http" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>http</span></a></p>
Timo Tijhof<p><span class="h-card" translate="no"><a href="https://front-end.social/@Wilto" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>Wilto</span></a></span></p><p>Fwiw: I've seen arr.length = 0; as a way to empty an array after taking a slice copy, before processing its contents, to ensure atomicity around a buffer.</p><p>This is usually an unverified micro-optimisation that may even be counter-productive depending on browser/engine; compared to simpler = [];</p><p>However one valid use is multiple variables/props pointing to it, then it can avoid a split brain problem.</p><p><a href="https://fosstodon.org/tags/webperf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>webperf</span></a></p>
Kenji Baheux

Watching @ThePrimeTime's recent video (youtu.be/ciNXbR5wvhU?si=SKJ0IO) and saw the comments around HTTP cache & resource sharing across origins.

As someone who's been on Chrome's web platform loading team, it's a good reminder that awareness and dissemination of knowledge is hard 😳. Resources have long been isolated across sites due to cache partitioning (in Chrome since 2020, even longer in other browsers).

Learn more: developer.chrome.com/blog/http
#webperf #webdev

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