Tim Vereecke

Loves speeding up websites. Web performance architect @Akamai, also runs and #WebPerf #PageSpeed #SEO

[Tim Vereecke @TimVereecke]

This mPulse graph shows image requests per page. Before the rollout, the blue line (prerendered) requested more images than the non-prerendered. After the fix, the two lines converged. Result: lower bandwidth usage, and the ability to prerender pages more aggressively. #webperf

[Tim Vereecke @TimVereecke]

While I’m a big fan of the Speculation Rules API, there used to be one major downside: prerendered pages ignored loading=lazy, causing all images to download.
That changed 2 months ago.

[Tim Vereecke @TimVereecke]

@masvil_ yes correct

[Tim Vereecke @TimVereecke]

New speed record 🚀
Just measured a 15ms Largest Contentful Paint (LCP), the fastest (prerendered) navigation I’ve seen so far on my website using RUM. #webperf

[Danny Moerkerke @dannymoerkerke]

Progressive web apps (PWA) are disruptive because they eliminate gatekeepers like Apple and Google that basically determine if your business becomes a success or not.

If you're not in the app stores or they kick you out, tough luck.

PWAs change that. That's my mission.

[Mateusz Krzeszowiak @krzksz]

One of the most important pieces about web performance that I've ever worked on is finally live. After a few months of work, my analysis of the correlation between site speed and conversion across the entire @Shopify platform is out:
https://t.co/pIJ4fajmol

[General Marc @general_marcT]

Best het ganse artikel lezen in plaats van alleen de kop.

[Tim Vereecke @TimVereecke]

@PixelPlatoon80 kan die onderste cirkel iets omhoog aub, de E314 kan daar toch ook niets aan doen? 😉

[Tim Vereecke @TimVereecke]

@BEbs6fz @SCheunk had je dan echt graag een rol WC papier van de overheid gekregen?

[Firefox for Web Developers @FirefoxWebDevs]

Firefox 150 just landed & includes new web platform features like:

🎉 sizes="auto" on images
🎉 light-dark() image support
🎉 CSS revert-rule
🎉 ariaNotify()
🎉 Media pseudo-classes like :playing

None of these are baseline yet, so check MDN for support

https://t.co/pQ04X68nrY

[Tim Vereecke @TimVereecke]

@dannyries @tijd "aanbevelen" 😉

[Patrick Meenan @patmeenan]

I bring you "Waterfall Tools": https://t.co/3IqXTTEjGr

I've been wanting to build a fully-JS client-based waterfall viewer for a really long time and, with the help of Gemini and Opus finally put one together.

It's scary how capable it is for < 100 kB.

[Vox Clamantis @clamantis_vox]

Niet vergeten, nooit vergeven!

Lt Thierry Lotin
1Sgt Yannick Leroy
Cpl Stéphane Lhoir
Cpl Bruno Bassinne
Cpl Louis Plescia
Cpl Bruno Meaux
Cpl Marc Uyttebroeck
Cpl Christophe Dupont
Cpl Alain Debatty
Cpl Christophe Renwa

En hun families, collega’s en vrienden

[svs 🇮🇳 @_svs_]

XML. You’ve invented XML.

[Tim Vereecke @TimVereecke]

@jquery Love the byte reduction! #webperf

[jquery @jquery]

It's here! jQuery 4.0.0 FINAL is released! 3 days after jQuery's 20th birthday. https://t.co/Tw4CdtYRg2 #jquery #happybirthday #jqueryreunion

[Tim Vereecke @TimVereecke]

@PixelPlatoon80 ideale content voor Televox (memories)

[jquery @jquery]

On January 14, 2006, 20 years ago today, @jeresig introduced a new JavaScript library that came to be known as jQuery.

[Wes Bos @wesbos]

Who asked for this?

Uniqlo × Akamai collab??

[Stoyan Stefanov 🪩 @stoyanstefanov]

Web Performance Calendar day 9 with Martin Michálek on web perf folklore vs. evidence. Too many anecdotes (like 100ms = 1%) conflate speed gains with redesigns, UX changes, or seasonal shifts. Repeating them hurts the credibility of real performance work.
https://t.co/Cq5NIga4bB