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Performance Links
24.3.2020
I've had a number of browser tabs open to articles all related to web performance and gosh darn it if blogging them is a way for me get some closure. They are all good!
Manuel Matuzovic, Why 543 KB keep me up at night:
Yes, I know, it depends. 543 KB aren't always bad, but on that specific page...
Build a Node.js Tool to Record and Compare Google Lighthouse Reports
16.3.2020
In this tutorial, I’ll show you step by step how to create a simple tool in Node.js to run Google Lighthouse audits via the command line, save the reports they generate in JSON format and then compare them so web performance can be monitored as the website grows and develops.
I’m hopeful this...
Empow – Decentralized, Visually Focused Social Network
9.3.2020
Since Blockchain became well-known to the public back in the bull-run in 2017, many developer teams have started to develop blockchain-based products and applications that can be used by the masses.
The post Empow – Decentralized, Visually Focused Social Network appeared first on Bitcoin News
When CSS Blocks
28.2.2020
Tim Kadlec:
One particular pattern [for loading non-critical CSS] I’ve seen is the preload/polyfill pattern. With this approach, you load any stylesheets as preloads instead, and then use their onload events to change them back to a stylesheet once the browser has them ready.
So you're...
In-Browser Performance Linting With Feature Policies
26.2.2020
Here’s a neat idea from Tim Kadlec. He uses the Modheader extension to toggle custom headers in his browser. It also lets him see when images are too big and need to be optimized in some way. This is a great way to catch issues like this in a local environment because browsers will throw an error...
Do This to Improve Image Loading on Your Website
20.2.2020
Jen Simmons explains how to improve image loading by simply using width and height attributes. The issue is that there’s a lot of jank when an image is first loaded because an img will naturally have a height of 0 before the image asset has been successfully downloaded by the browser. Then it needs...
Helping Browsers Optimize With The CSS Contain Property
10.2.2020
There is a growing number of things that we have to do to help the browser achieve for peak performance.
Responsive image syntax has several. For example, needing to tell the browser how large the image will be in our layout with the sizes attribute and how big the images are with w descriptors....
Innovation Can’t Keep the Web Fast
31.1.2020
Every so often, the fruits of innovation bear fruit in the form of improvements to the foundational layers of the web. In 2015, HTTP/2 became a published standard in an effort to update an aging protocol. This was was both necessary and overdue, as HTTP/1 rendered web performance as an arcane sort...
Lightning-Fast Web Performance
31.1.2020
If you're interested in leveling up your knowledge and skill of web performance, you can't do better than learning directly from Scott Jehl.
Direct Link to Article — Permalink… Read article
The post Lightning-Fast Web Performance appeared first on CSS-Tricks
Bitcoin Gained 8.9 Million Percent Over the Last Decade
27.12.2019
2020 is fast approaching and the last decade will be behind us. Throughout the last ten years, the biggest unicorn firms were born like Uber and Airbnb. However, even though Bitcoin isn’t a company, the best investment of the decade belongs to the decentralized cryptocurrency Satoshi created....
Location, Privilege and Performant Websites
7.11.2019
Here’s a wonderful reminder from Stephanie Stimac about web performance. She writes about a recent experience of moving to an area with an unreliable network and how this caused problems for her as she tried to figure out what was happening during a power blackout:
Assuming all of your customers...
A Look at JAMstack’s Speed, By the Numbers
1.11.2019
People say JAMstack sites are fast — let’s find out why by looking at real performance metrics! We’ll cover common metrics, like Time to First Byte (TTFB) among others, then compare data across a wide section of sites to see how different ways to slice those sites up compare.
First, I’d like...
Why Are Accessible Websites so Hard to Build?
23.10.2019
I was chatting with some front-end folks the other day about why so many companies struggle at making accessible websites. Why are accessible websites so hard to build? We learn about HTML, we make sure things are semantic and — voila! @— we have an accessible website. During the course...
Workflow Considerations for Using an Image Management Service
16.10.2019
There are all these sites out there that want to help you with your images. They do things like optimize your images and help you serve them performantly.
That's a very good thing. By any metric, images are a major slice of the resources on websites, and we're notoriously bad at optimizing them...
Ten-Ton Widgets
15.10.2019
At a recent conference talk (sorry, I forget which one), there was a quick example of poor web performance in the form of a third-party widget. The example showed a site that installed the widget in order add a "email us" button fixed to the bottom right of the viewport. Not even a live-chat widget...
Weekly Platform News: Impact of Third-Party Code, Passive Mixed Content, Countries with the Slowest Connections
10.10.2019
In this week's roundup, Lighthouse sheds light on third-party scripts, insecure resources will get blocked on secure sites, and many country connection speeds are still trying to catch up to others... literally.
Measure the impact of third-party code during page load
Lighthouse, Chrome’s built-in...
Recipes for Performance Testing Single Page Applications in WebPageTest
10.10.2019
WebPageTest is an online tool and an Open Source project to help developers audit the performance of their websites. As a Web Performance Evangelist at Theodo, I use it every single day. I am constantly amazed at what it offers to the web development community at large and the web performance folks...
Preloading Pages Just Before They are Needed
27.9.2019
The typical journey for a person browsing a website: view a page, click a link, browser loads new page. That's assuming no funny business like a Single Page App, which still follows that journey, but the browser doesn't load a new page — the client fakes it for the sake of a snappier...
Weekly Platform News: Layout Shifts, Stalled High-Bitrate Videos, Screenshots in Firefox
26.9.2019
In this week's roundup: fighting shifty layouts, some videos might be a bit stalled, and a new way to take screenshots in Firefox.
Let's get into the news!
Identifying the causes of layout shifts during page load
You can now use WebPageTest to capture any layout shifts that occur on your website...
How Web Content Can Affect Power Usage
18.9.2019
Because we know that all people with battery-powered devices are constantly concerned about their battery levels, and that websites are significant consumers of that battery power, we should probably think about this stuff a lot more than we do.
I'd expect the browser itself to be our main ally...