We have always had some form of testing metric. Back in the day we used things like the window.onload event or something similar. Then we started getting more sophisticated with TTFB, FCP, etc. Finally, along came CWVs, which continue to grow and evolve. But sometimes you just need to measure something that isn’t covered by all of these. And that’s where the User Timing API comes in. Happy reading! Continue reading
Author Archives: Aaron T. Grogg
Using Resource Hints to Improve the Page Load Experience
As webpages become more complex, they also become larger and slower. The browser then has a tougher time finding all of the assets it needs. But we can help by giving the browser a few hints… Happy hinting! Continue reading
Record a Performance in DevTools, then Replay it in WebPageTest
WebPageTest (WPT) recently released a Chrome Extension that allows you to record an experience in DevTools, export that experience, then add that export to WPT to run as a test. Happy testing! Continue reading
Add Scripts to Your WebPageTest Tests
Oh the heals of my “Getting to Know… WebPageTest” article, I present an add-on of sorts, showing how to add and use scripts to your tests. Happy scripting! Continue reading
Getting to Know… WebPageTest
The latest installment in my “Getting to Know…” series, where I “get to know” some tech and share resources, tips, tricks and notes that I collect along the way. This time around, let’s get to know… WebPageTest! Continue reading
Use Responsive Images to Give Each User an Image that is “Just Right”
As our range of web-enabled devices spawns new and different screen sizes, sending the same image to all devices becomes problematic. This is where responsive image comes into play. Continue reading
Today’s Readings
The latest installment in my “Today’s Readings” series, including CSS CASCADE LAYERS, WP and React updates, browser vs. Node JS, Markdown, WPO, some cool CSS tricks, and *2* MS-DOS references. Happy reading! Continue reading
Today’s Readings
The latest installment in my “Today’s Readings” series, including CSS custom property fallbacks, replacing JS with native HTML, reducing font file size, cool dev tool apps, a bunch of WPO treats, remote job stuff, and a ridiculous new browser feature. Happy reading! Continue reading
Today’s Readings
The latest installment in my “Today’s Readings” series, including CSS layout and Layers, JS HoF & sort options, a CMS for React/Next.js, browser privacy check, AT run-through, and, are SPAs swinging back to the server? Happy reading! Continue reading
Today’s Readings
The latest installment in my “Today’s Readings” series, including a11y, inclusivity and respecting user preferences, GDPR smack-downs, flex & grid, wpo and a bunch of browser udpates. Happy reading! Continue reading