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“Cancelable” Smooth Scrolling

2.2.2021
Here’s the situation: Your site offers a “scroll back to top” button, and you’ve implemented smooth scrolling. As the page scrolls back to the top, users see something that catches their eye and they want to stop the scrolling, so … The post “Cancelable”...

GreenSock ScrollTrigger

28.1.2021
High five to the Greensock gang for the ScrollTrigger release. The point of this new plugin is triggering animation when a page scrolls to certain positions, as well as when certain elements are in the viewport. Anything you’d want configurable … The post GreenSock ScrollTrigger...

Proper Tabbing to Interactive Elements in Firefox on macOS

15.1.2021
I just had to debug an issue with focusable elements in Firefox. Someone reported to me that when tabbing to a certain element within a CodePen embed, it shot the scroll position to the top of the page (WTF?!). So, … The post Proper Tabbing to Interactive Elements in Firefox on macOS...

Fading in a Page on Load with CSS & JavaScript

13.1.2021
Louis Lazaris demonstrates a very simple way of doing this. Hide the body (with JavaScript) right away with opacity: 0 Wait for all the JavaScript to execute Unhide the body by transitioning it back to opacity: 1 Like this: CodePen… The post Fading in a Page on Load with CSS &...

Fixing Smooth Scrolling with Find-on-Page

13.1.2021
Back when we released the v17 design (we’re on v18 now) of this site. I added html { scroll-behavior: smooth; } to the CSS. Right away, I got comments like this (just one example): … when you control+f or … The post Fixing Smooth Scrolling with Find-on-Page appeared first...

Continuous Performance Analysis with Lighthouse CI and GitHub Actions

23.12.2020
Lighthouse is a free and open-source tool for assessing your website’s performance, accessibility, progressive web app metrics, SEO, and more. The easiest way to use it is through the Chrome DevTools panel. Once you open the DevTools, you will see a “Lighthouse” tab. Clicking the “Generate report”...

Converting and Optimizing Images From the Command Line

21.12.2020
Images take up to 50% of the total size of an average web page. And if images are not optimized, users end up downloading extra bytes. And if they’re downloading extra bytes, the site not only takes that much more time to load, but users are using more data, both of which can be resolved, at least...

Netlify & Next.js

14.12.2020
Cassidy Williams has been doing a Blogvent (blogging every day for a month) over on the Netlify Blog. A lot of the blog posts are about Next.js. There is a lot to like about Next.js. I just pulled one of Cassidy’s starters for fun. It’s very nice that it has React Fast-Refresh built-in....

Using CSS Custom Properties to Adjust Variable Font Weights in Dark Mode

10.12.2020
Black isn’t always slimming. When recently testing a dark mode option for one of my sites, I experienced first-hand the issue that Robin Rendle addresses in this article. All of my page text — headings and body copy — appeared to bulk up when I switched to dark mode. And it didn’t matter what fonts...

Web Performance Calendar

7.12.2020
The Web Performance Calendar just started up again this year. The first two posts so far are about, well, performance! First up, Rick Viscomi writes about the mythical “fast” web page: How you approach measuring a web page’s performance can tell you whether it’s built for speed or whether it feels...

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