Aaron T. Grogg

Your holiday campaign is ready, but what about your website? Performance issues can ruin your marketing investment. Your marketing campaign gets customers to the door. Your website has to get them through it.

Keep track of your customers' experience. Learn how performance monitoring can help you fix today's problems and prevent tomorrow's. aarontgrogg.com/blog/2026/09...

Web Performance issues can kill a marketing campaign, wasting time and resources, hurting your ROI and bottom line. Learn to recognize web performance issues "in the wild", how they are represented by Core Web Vitals, and how you and your team can use them to resolve user experiences issues before…

The holiday shopping season is the most important time of the year for many businesses. But getting someone to your website is only half the job; what happens when they get there? Web performance issues create frustrated users. And frustrated users don't wait, they leave. Learn how to find, and…

I’m still seeing Lake Ontario in Google Maps, but they are hedging with “Gulf of Mexico (Gulf of America)”… Apple Maps is in full a$$-kissing mode. But yeah, MapQuest remains true… Will try it for a while, and deleting Apple Maps yet again…

I reduced this PLP's LCP by nearly 3s just by replacing the JS animation with CSS animation. #NoLoJS FTW.

SRE roles seem to have exploded onto the scene, with frontend performance tossed into the description as if they were free breadsticks. Any idea why the shift of performance focus?

Hey, @wordpress.com, 7.1 upgrade, not a great look, just in case it hasn't been reported yet...

During a client audit, I re-encountered a common, annoying, and harmful, pattern: dupe HTML, instead proper responsive design. Can we please stop this? Happy reducing!

TIL: There is a thing called Server-Timing Headers Sharing a few details related to my latest finding from around the world-wide web: Server-Timing Headers Happy timing!

WebMCP could fundamentally change how websites are consumed. The more I dig, the more I wonder whether websites will need visible content?

A fascinating read from @codepo8.bsky.social: Powerful quote: "Recognize fascism as a technique, not a legitimate ideology or ordinary party. ... Once democracies understand it instead as a hostile technique for destroying democracy from within, the response becomes conceivable." 👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏

Investigating Wish.com's high LCP led me down a rabbit hole of performance paper cuts. But I was able to reduce their LCP from 7.12s to 1.67s, and that was with only a couple of my recommended improvements in place. Read to find out how!

Comparing three similar, but quite different, "pre-fetch" techniques, explaining how they are similar, how they are different, when each should be used, and how together they create a powerful performance trio.

Getting excited to hop on this call with the great @henrihelvetica.bsky.social! Who's joining???

TTFB? FCP? LCP? INP? CLS? Something else? What's your most important perf metric?

New game! This week, it is a HTML-themed crossword. Play online at: comicss.art/games/12/ #css #html #game #crossword #webDev

The absolute fool-fuckery is astounding… I doubt these idiots can even put their own pants on…

Brava!! 🎉🥳

SCOOP: An internal DHS document obtained by 404 Media shows for the first time CBP used location data sourced from the online advertising industry to track phone locations. This surveillance can happen through all sorts of apps, such as video games, news apps, weather trackers, and dating apps.

This would be a great addition to every CMS, as a page is published/updated, right before it is cached! 🥰

Taught Claude Code to prioritise loading the first image in a post 😉 #WebPerf

Speedcurve’s Page Speed Benchmarks reported Costco.com's LCP averaging at 6.85s. But could it be that CLS is at least part of the problem? Read to find out!

On February 18, 2026, I sat down with Chrisitan Heilmann of Coffee with Developers to chat about NoLoJS and lots and lots of other web-type stuff. Have a listen and let me know what you think!

Speedcurve’s Page Speed Benchmarks reported Nike.com's LCP averaging at 4.36s. I got it down to 1.36s. Read to find out how! @Nike

After YEARS of the same design and having only a blogroll as my home page, I decided to add a landing page in front. Things are likely to change, but would love to hear what you think so far!

An upgrade to the NoLoJS repo, adding an auto-generated static documentation site, with loads of bells and whistles. Would love to hear your thoughts! Happy reducing!

The latest installment in my "Today's Readings" series, offering my rants and thoughts based on findings from around the world-wide web, including Accessibility, CSS, CWV, Design, DevTools, HTML, JS, NoLoJS, Performance, Shopify, Speculation Rules and more. Happy reading!

👉 I made sho!io. Share what you’re working on without the social noise. I’ve been quietly working on a side project called sho!io, and I’m opening it up for feedback and testing. You can read more about it: stuffandnonsense.co.uk/blog/i-made-... And join the waiting list: sholio.app/waitlist

First time I hope hell exists for these people…

Just shipped bsky-comments! Embed Bluesky threads anywhere with a zero-dependency Web Component. • Framework Agnostic (Native WC) • < 3kb gzipped • Zero Config: Just paste the Post URL • Light DOM: Fully customizable (CSS/Tailwind) github.com/florianschep... #webdev #opensource #buildinpublic

Hire me for small projects ko-fi.com/anatudor/com...

I'm running 30% off both my books for those who still read real books! 💸 Interested in learning the fundamentals of React and Web performance? Don't miss out! Real humans writing real books is a rarity these days 😅 🧵👇🏼

Sounds about right, these f-ing wanna be thugs…

In. Sane.

Hey, I’m gonna try something new! If you’ve got a question about the tech industry (can be about how it works, why they make products the way they do, what a term means, etc.) I’m gonna try to answer some Q&A in the short roundup weekly videos I’ve been doing. Just reply, DM or email your question.

Because of course free speech only matters when it is *their* free speech, right???

Doctors say that vaccines protect children from dangerous diseases. A nepo baby who barbecues dogs and snorts cocaine off toilet seats says that vaccines make children vulnerable to 5G radiation. For busy parents, it can be hard to know who to trust.

Yep.

The latest installment in my "Today's Readings" series, offering my rants and thoughts based on findings from around the world-wide web, including A11Y, AI, CSS, CSV, Debugging, DevTools, JS, NoLoJS, Performance, Progressive Enhancement, RWD, UI, UX, WP and more. Happy reading!

If ever anyone on the web *didn’t* need a recommendation… 🤩

This is great! Wonder how various RUM tools will integrate this…

Introducing NoLoJS: an open-source design library of components that reduce reliance on JS, where possible, in favor of HTML and CSS.

Just another day in Trumplandia…

Had a chance to write a guest post for DebugBear all about the JPEG XL (JXL) image format. Would love to hear your thoughts on it!

If you or someone you know needs help with website performance optimizing, please feel free to reach out!

Did you know that you can easily debug starting-style CSS at-rules in Chrome DevTools? 🏁 In the Elements Panel, find the element where the starting-style is applied, then click on the (starting-style) label to show the values in DevTools. 🔥 Have you already used the Starting Style at-rule?