Smashing Magazine

FEBRUARY 15, 2021

<video id="u457537-video" class="video-js vjs-big-play-centered" controls preload="auto" width="1050" height="591" poster="assets/home_poster.jpg" data-setup='{"fluid": true}'> <source src="assets/home_1.mp4" The default preload attribute is metadata , and would have resulted in a few 100KB downloaded. vf, il).

Network 143

Network Speed Website Mobile 143

Speed Curve

DECEMBER 19, 2018

This blog post has a simple conclusion: Load script asynchronously! What we see is that the HTML parser stops when it encounters a SCRIPT tag until that script is downloaded, parsed, and executed. Because the HTML parser stopped, all network traffic also stopped (because no other HTML tags were parsed to initiate HTTP requests).

Internet 53

Internet Internet Website Traffic 53

Smashing Magazine

OCTOBER 18, 2021

We preload the fonts. It is built on top of <img> HTML tag and can help to improve LCP and CLS. Recently, we have implemented responsive image preload and started serving images in WebP format which helped us to reduce 75% of image payload, reduce LCP by 62%, and Speed Index by 24%. We use font-display optional.

Website 105

Website Google Metrics Testing Tools 105

Speed Curve

OCTOBER 25, 2023

Third parties add tons of value by increasing conversions (via targeting beacons) and helping you understand your users in unprecedented ways (via analytics tags). For example, this case study explains how we used RUM to A/B test JSONP requests and the preloader. But they can significantly affect how – or even if!

Benchmarking 62

Benchmarking Metrics Website Monitoring 62

Dynatrace

APRIL 16, 2021

The idea, and most of the content for this blog, comes from one of our Partners; Stephan Dannewitz , DevOps & Site Reliability Engineer at avodaq AG. If you’re developing, testing, operating, or if you’re a business owner of a Python-based application then I encourage you to read the rest of the blog. Yes – that’s it.

Monitoring 153

Monitoring Open Source Best Practices DevOps 153

Dynatrace

NOVEMBER 16, 2020

Consider a troubleshooting scenario for a single-page application where a lot of content is already preloaded. All you need to do is ensure that the RUM JavaScript tag in the monitored application (which is either auto-injected by OneAgent or manually inserted) is from OneAgent version 1.193+.

Ecommerce 188

Ecommerce Monitoring Website Tuning 188

Smashing Magazine

JULY 29, 2019

Chrome devtools screenshot of the DOM, where I’ve expanded one inline style tag. The browser will guess at what the highest priority assets are, but you can provide a resource hint using the <link rel="preload"> tag, instructing the browser to download the asset as soon as possible. Google Homepage — DOM.

Cache 96

Cache Google Mobile Network 96