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Nalezeno "lazy loading": 25

queryLocalFonts

11.8.2023
One of the larger downloads when requesting a webpage are custom fonts. There are many great techniques for lazy loading fonts to improve performance for those on poor connections. By getting insight into what fonts the user has available, we can avoid loading custom fonts. That’s where...

An Approach to Lazy Loading Custom Elements

13.2.2023
We’re fans of Custom Elements around here. Their design makes them particularly amenable to lazy loading, which can be a boon for performance. Inspired by a colleague’s experiments, I recently set about writing a simple auto-loader: Whenever a custom … An Approach to Lazy Loading...

How to Show Images on Click

27.5.2021
Most images on the web are superfluous. If I might be a jerk for a bit, 99% of them aren’t event that helpful at all (although there are rare exceptions). That’s because images don’t often complement the text they’re … The post How to Show Images on Click appeared first...

A Bare-Bones Approach to Versatile and Reusable Skeleton Loaders

3.3.2021
UI components like spinners and skeleton loaders make waiting for a page load less frustrating and might even affect how loading times are perceived when used correctly. They won’t completely prevent users from abandoning the website, but they might encourage … The post A Bare-Bones Approach...

Lazy Loading Images in Svelte

16.7.2020
One easy way to improve the speed of a website is to only download images only when they’re needed, which would be when they enter the viewport. This “lazy loading” technique has been around a while and there are lots of great tutorials on how to implement it. But even with all the resources...

Lazy Load IFRAMEs

13.7.2020
We’ve known for a decade that lazy loading resources like JavaScript, CSS, and especially images is a massive performance win for web pages. At first we used tricks and JavaScript to do the lazy loading, but more recently native image lazy loading has debuted in browsers. Did you know that...

Native Image Lazy Loading in Chrome Is Way Too Eager

5.2.2020
Interesting research from Aaron Peters on <img loading="lazy" ... >: On my 13 inch macbook, with Dock positioned on the left, the viewport height in Chrome is 786 pixels so images with loading="lazy" that are more than 4x the viewport down the page are eagerly fetched by Chrome...

Image Lazy Loading

25.11.2019
Lazy loading images is a practice that’s been popular for a decade and for good reason: images are usually the heaviest downloads on a given webpage and avoiding unloading images that are never seen saves the user bandwidth. There are plugins for lazy loading images in every JavaScript...

An Explanation of How the Intersection Observer Watches

24.9.2019
There have been several excellent articles exploring how to use this API, including choices from authors such as Phil Hawksworth, Preethi, and Mateusz Rybczonek, just to name a few. But I’m aiming to do something a bit different here. I had an opportunity earlier in the year to present the VueJS...

Lazy load embedded YouTube videos

20.8.2019
This is a very clever idea via Arthur Corenzan. Rather than use the default YouTube embed, which adds a crapload of resources to a page whether the user plays the video or not, use the little tiny placeholder webpage that is just an image you can click that is linked to the YouTube embed. It still...

Weekly Platform News: HTML Loading Attribute, the Main ARIA Specifications, and Moving from iFrame to Shadow DOM

15.8.2019
In this week's roundup of platform news, Chrome introduces a new attribute for loading, accessibility specifications for web developers, and the BBC moves visualizations to the Shadow DOM. Chrome ships the loading attribute The HTML loading attribute for lazy-loading images and iframes is...

Collective #539

8.8.2019
Native lazy-loading for the web * The case study factory * Predictably Random * Writing Modes And CSS Layout Collective #539 was written by Pedro Botelho and published on Codrops

Get Peak WordPress Performance with Jetpack

18.7.2019
The irony of web performance is that the average page weight of a site continues to go up year after year, despite us being more aware of the problem and having more tools at our disposal to fight it than ever. To paraphrase Seinfeld, "we know how to fight page weight issues; we just don't use...

Tips for rolling your own lazy loading

1.7.2019
You may have heard (or even issued the call) that “we can just use lazy loading!” when looking for a way to slim down a particularly heavy web page. Lazy loading is a popular technique for gradually requesting images as they come into view, rather than all at once after the HTML of the page...

A Deep Dive into Native Lazy-Loading for Images and Frames

15.5.2019
Today's websites are packed with heavy media assets like images and videos. Images make up around 50% of an average website's traffic. Many of them, however, are never shown to a user because they're placed way below the fold. What’s this thing about images being lazy, you ask? Lazy-loading...

Collective #514

9.5.2019
Hybrid Lazy Loading * SVG Will Save Us * enFont Terrible * cssfx * Formation * CSS-Only Chat Collective #514 was written by Pedro Botelho and published on Codrops

Native Lazy Loading

9.4.2019
IntersectionObserver has made lazy loading a lot easier and more efficient than it used to be, but to do it really right you still gotta remove the src and such, which is cumbersome. It's definitely not as easy as: <img src="celebration.jpg" loading="lazy" alt="..." /> Addy Osmani says...