Cliff Crocker
@cliffcrocker.bsky.social
📤 542
📥 100
📝 38
I’m here for the RUM, WebPerf and dad jokes.
reposted by
Cliff Crocker
Tammy Everts 🍁
11 days ago
So excited to be paired with
@paulcalvano.bsky.social
for this double-header on PerformanceObserver next week! Paul will take a deep dive into the HTTP Archive. Then I'll break down the "performance plateau" – why you need to know it and how to find it.
performanceobserver.dev/events/episo...
loading . . .
Querying the HTTP Archive and finding your Performance Plateau | PerformanceObserver
In this episode, Paul Calvano dives deep into querying the HTTP Archive dataset to uncover web trends, while Tammy Everts breaks down the "Performance Plateau", explaining why identifying your specifi...
https://performanceobserver.dev/events/episode-10/
0
9
5
reposted by
Cliff Crocker
John Paul
12 days ago
Ironic that England does No Kings better than we do
38
928
242
reposted by
Cliff Crocker
Wajahat Ali
15 days ago
Will it be national news? Will it cause performative outrage? Will he be censured? Nope. Forgotten by tomorrow.
1181
13966
4537
reposted by
Cliff Crocker
Ryan Townsend
18 days ago
Shame about the lack of
#webperf
enhancements accepted into Interop 2026, particularly CLS which would have been really useful. But there are plenty of performance-adjacent improvements, mainly via CSS enhancements such as anchor positioning and scroll-driven animations:
web.dev/blog/interop...
loading . . .
Interop 2026: Continuing to improve the web for developers | Blog | web.dev
Learn about the features included in Interop 2026.
https://web.dev/blog/interop-2026
0
2
1
reposted by
Cliff Crocker
Every Bite Counts
21 days ago
Country Singer, songwriter Charley Crockett well said......
326
10644
3328
reposted by
Cliff Crocker
Joshua Reed Eakle 🗽
24 days ago
Flashback to 2008 when John McCain shut down a racist line of questioning. I miss this Republican Party.
loading . . .
298
2341
578
reposted by
Cliff Crocker
Henri Helvetica 🧑🏾🚀🇭🇹
about 1 month ago
✨ SPDY STREAM 023 ✨ w/
@dbelson.com
of
@cloudflare.social
, Head of Data and Insights. We are excited to welcome David in discussing the recently released
@radar.cloudflare.com
2025 Year in Review! Join us! ✨ SPDY STREAM 023 ✨ 📆 Wed Feb 4th 2026 ⏰ 1pm EST, 10am PST 🔗
www.youtube.com/live/R-j3HrE...
0
1
4
reposted by
Cliff Crocker
winston
about 1 month ago
Hi friends. Are you finding that suddenly armed gangs are roving your street deploying chemical weapons like it's candy at a parade? You can go to Menards or a hardware store and get the 3M chemical respirators. They are in the paint section. Smalls exist but they need to be ordered. Stay safe!
1
33
12
reposted by
Cliff Crocker
Ben Kuchera
about 1 month ago
Ladies and gentlemen, the greatest American songwriter that no one remembers, Blaze Foley. Give him two minutes and he might change your life.
loading . . .
Blaze Foley - Clay Pigeons, rare Live
YouTube video by Dave HJ
https://www.youtube.com/watch?v=uM3YROq_cLY&list=RD69YCXgVdyR4&index=2
24
1933
363
reposted by
Cliff Crocker
winston
about 1 month ago
For anyone wanting to support the people under attack in St. Paul here's a fundraiser being organized by people in the public schools to help directly with rent relief. This is a huge need, please share widely! ❤️🔥
my.cheddarup.com/c/support-ou...
loading . . .
Support our St. Paul Public Schools Community - Cheddar Up
Support our St. Paul Public Schools Community - HIGHLAND PARK MIDDLE SCHOOL PARENT SOLIDARITY NETWORK - Cheddar Up. Collect online payments for events and fundraisers with Cheddar Up.
https://my.cheddarup.com/c/support-our-st-paul-public-schools-community
0
8
6
reposted by
Cliff Crocker
Eric Bailey
2 months ago
"Websites that work perfectly in traditional browsers may end up broken for actual accessibility tools. The web will fragment as sites must test against a growing number of AI browser agents with different requirements."
www.coryd.dev/posts/2025/a...
loading . . .
AI browsers are straight out of the enshittification playbook • Cory Dransfeldt
Enshittification isn't cliché, it's simply pervasive. Browsers being launched by AI companies will, undoubtedly, follow the same playbook we've seen over and over again.
https://www.coryd.dev/posts/2025/ai-browsers-are-straight-out-of-the-enshittification-playbook
1
11
3
reposted by
Cliff Crocker
Barry Pollard
2 months ago
This one got released rather quietly and I think could do with a bit more attention! Read about how to avoid caching performance penalties due to tracking query params and the like!
add a skeleton here at some point
2
18
8
reposted by
Cliff Crocker
Stoyan Stefanov
3 months ago
Web Performance Calendar day 15 with
@nicj.net
,
@cliffcrocker.bsky.social
and
@karlijnlowik.bsky.social
Löwik presenting an update on W3's RUM Community Group and YOU
calendar.perfplanet.com/2025/rumcg-a...
loading . . .
RUMCG - A year in review
performance.now() 2024 was the year we officially launched the W3 RUM Community Group. The idea to form a community group around real user monitoring (RUM) came from the desire to come together as ven...
https://calendar.perfplanet.com/2025/rumcg-a-year-in-review/
1
7
5
reposted by
Cliff Crocker
Barry Pollard
3 months ago
LCP and INP are now Baseline newly available /since they are now available in all major browsers! 🎉🥳🍾 Really, really, really curious to see what sort of new performance insights we’ll see as sites start to collect and look at the data!
#CoreWebVitals
add a skeleton here at some point
0
23
4
reposted by
Cliff Crocker
Henri Helvetica 🧑🏾🚀🇭🇹
3 months ago
Since it was mentioned by
@cliffcrocker.bsky.social
on the
@embrace.io
x
@speedcurve.com
webinar: A reminder that Mike K of
@cloudflare.social
is my guest tomorrow to talk about TELESCOPE. Really excited for this one. Join us! 📆 Wed Dec 10th ⏰ 2pm EST 🔗
www.youtube.com/live/hhNFI_X...
0
2
1
Really excited for this. Telescope is so hot right now.
add a skeleton here at some point
3 months ago
0
1
0
reposted by
Cliff Crocker
Mandy
3 months ago
I’ve been seeing a lot of AI talks and articles lately - I have no idea what’s going on but it has got me wondering about Performance and accessibility and I only have more questions. “People deserved a better web. Will AI be the one who gets it?”
medium.com/@mandy.micha...
loading . . .
People deserved a better web. Will AI be the one who gets it?
Like many people in the web industry I’ve been keeping an eye on the “state of AI” and what it means for my job, and my day to day life. To…
https://medium.com/@mandy.michael/people-deserved-a-better-web-will-ai-be-the-one-who-gets-it-9b7192af3f0e
0
7
1
reposted by
Cliff Crocker
Tammy Everts 🍁
4 months ago
#PixelPalooza
is coming up this Thursday! This awesome FREE online event covers how to make sure all those helpful images and videos on your site don't hurt
#webperf
and
#a11y
. I'm joining
@seancdavis.com
to talk about the hidden cost of media on the web. Get your ticket 👉
cfe.dev/events/pixel...
loading . . .
PixelPalooza 2025
PixelPalooza will explore all the best practices we, as developers, can leverage media like images, video, audio and documents across our sites and applications.
https://cfe.dev/events/pixelpalooza-2025/
0
9
9
reposted by
Cliff Crocker
zeldman
4 months ago
They say AI will replace the web as we know it, and this time they mean it. Here follows a short list of previous times they also meant it,…
https://zeldman.com/2025/10/25/receipts-a-brief-list-of-prominent-articles-proclaiming-the-death-of-the-web/?utm_source=bluesky&utm_medium=jetpack_social
2
27
5
reposted by
Cliff Crocker
Joseph Wynn
4 months ago
6 years ago I started a side project to build a web accessibility tool that prioritises simple reporting and quick feedback loops so that teams can fix a11y regressions before they affect users. I am so proud to say that side project is now finished, and A11y Pulse is live.
www.a11ypulse.com
loading . . .
A11y Pulse
A11y Pulse: Automated accessibility testing for your website. Improve your site's accessibility and compliance with ease.
https://www.a11ypulse.com/
2
18
5
reposted by
Cliff Crocker
Jen Simmons
4 months ago
Curious about web technology coming to Safari? How about field-sizing, position-visibility, random(), scrollbar-color, hidden=until-found, auto-expanding <details>, command & commandfor, Largest Contentful Paint, CHIPS, scrollend event, Navigation API & more!
developer.apple.com/documentatio...
loading . . .
Safari 26.2 Beta Release Notes | Apple Developer Documentation
Released November 4, 2025 — 26.2 beta (20623.1.12)
https://developer.apple.com/documentation/safari-release-notes/safari-26_2-release-notes
5
54
9
Seeing everyone this week at
#perfnow
was a gift. So many great humans focused on an important cause. Can’t wait for next year!
4 months ago
0
13
1
reposted by
Cliff Crocker
Tim Kadlec
4 months ago
Always, always happy to see
@yoav.ws
get a shout-out. So much incredible work has happened because of him. Most recent example—speculation rules in WebKit.
#perfnow
1
24
4
@mmocny.com
doing an excellent job of visually explaining how interactions are measured between an MPA and a SPA.
#perfnow
4 months ago
0
8
3
reposted by
Cliff Crocker
Joan León
4 months ago
Huge thanks to
@andydavies.me
for mentioning the LoAF Helpers WebPerf Snippet at
@perfnow.nl
! Honored to be part of the amazing Web Performance community 🫶 🔗
webperf-snippets.nucliweb.net/Interaction/...
#WebPerf
#PerfNow
#Performance
#LoAF
#INP
#CoreWebVitals
0
18
6
So fortunate to work with this guy. Hard-pressed to find anyone with more knowledge on LoAF than
@andydavies.me
. That shirt though…
#perfnow
4 months ago
0
15
1
@tkadlec.bsky.social
is not only an ambassador of user experience he’s also the king of bad dad jokes.
#perfnow
#perfdad
4 months ago
0
5
0
reposted by
Cliff Crocker
Tammy Everts 🍁
4 months ago
Good morning and happy Halloween,
#PerfNow
friends! So excited about Day 2! If you’d like to chat about
#webperf
and
#ux
, come chat with
@andydavies.me
and
@cliffcrocker.bsky.social
and me from Team
@speedcurve.com
. And I still have plenty of Halloween goodies! Trick or treat!
0
4
1
reposted by
Cliff Crocker
Riccardo Margiotta
4 months ago
Google's performance thresholds are not your thresholds. Remember that Core Web Vitals are certainly a good starting point, but not the end goal. Don't aim for somebody else's target, correlate with your own real user conversions and set your own goals.
@tammyeverts.com
#PerfNow
#webperf
0
9
2
Loving the creativity
@inesakrap.bsky.social
is bringing to her talk on building a sustainable, fast web.
#perfnow
4 months ago
0
10
3
reposted by
Cliff Crocker
Tammy Everts 🍁
4 months ago
“As performance-minded technologists, you are in a position to do something about accessibility.” —
@marcysutton.com
at
#PerfNow
marcysutton.com/accessibilit...
loading . . .
Accessibility and Performance | MarcySutton.com
Musings about frontend code, accessibility, web development consulting, and life.
https://marcysutton.com/accessibility-and-performance
0
11
2
reposted by
Cliff Crocker
Tammy Everts 🍁
4 months ago
And last (but definitely not least) here’s
@cliffcrocker.bsky.social
’s super-interesting analysis of INP and its correlation with UX and business metrics.
#PerfNow
www.speedcurve.com/blog/INP-use...
loading . . .
SpeedCurve | Does Interaction to Next Paint actually correlate to user behavior?
If you make INP faster, will it actually improve the user experience... and help your business? Here's our analysis.
https://www.speedcurve.com/blog/INP-user-experience-correlation/
0
10
3
@tammyeverts.com
kicking off
@perfnow.nl
with a focus on what really matters. Users.
4 months ago
0
12
4
Great start to my favorite week with our first in person
#RUMCG
meeting before
@perfnow.nl
What’s RUMCG?
www.w3.org/community/ru...
4 months ago
1
5
2
reposted by
Cliff Crocker
The Onion
4 months ago
Trump Touts Productive Call With Putin About Ballroom Sconces
https://theonion.com/trump-touts-productive-call-with-putin-about-ballroom-sconces/
46
1546
186
reposted by
Cliff Crocker
Sherrilyn Ifill
4 months ago
So they didn’t like the ad. Let’s just post Reagan’s 5 min speech against tariffs as it appears on YouTube. Over and over. On all platforms (some of y’all are still on X). *1981 Sherrilyn horrified by 2025 Sherrilyn saying “let’s post Reagan’s speech.”
youtu.be/5t5QK03KXPc
loading . . .
President Reagan's Radio Address on Free and Fair Trade on April 25, 1987
YouTube video by Reagan Library
https://youtu.be/5t5QK03KXPc
852
30026
15511
reposted by
Cliff Crocker
Kevin M. Kruse
4 months ago
Over the past week, the president said the DOJ should pay him a quarter billion dollars, bulldozed half the White House to build himself a gaudy ballroom, bragged about murdering civilians in international waters, pardoned some more criminals, directed federal prosecutors to indict his opponents ...
512
12645
4990
reposted by
Cliff Crocker
Jake Archibald
5 months ago
We've already had a great response to this. Thank you everyone who took the time to make a ranking - I know there's a lot of proposals. If you haven't, there's still time!
bsky.app/profile/fire...
add a skeleton here at some point
8
64
15
reposted by
Cliff Crocker
Ryan Townsend
5 months ago
Safari TP 230 includes support for Largest Contentful Paint 🙌
#webperf
add a skeleton here at some point
1
15
6
reposted by
Cliff Crocker
performance.now() conference
5 months ago
OK, we're down to our last tickets. There's still room for people to join
performance.now()
on 30th and 31st of October (in two weeks and a bit), but it's time to decide.
perfnow.nl
Last tickets at
perfnow-2025.eventstack.shop
loading . . .
performance.now(); 30th and 31st of October, Amsterdam
On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.
https://perfnow.nl
0
7
6
reposted by
Cliff Crocker
Tammy Everts 🍁
5 months ago
I've been exploring
@speedcurve.com
's new Vitals Overview dashboard with some customers for a week or so now, and all I can say is WOW. Not only is it fun to play with, it also halves the time it takes to investigate
#webperf
and
#ux
issues. 👉 Take a quick tour:
www.speedcurve.com/blog/a-smart...
loading . . .
SpeedCurve | NEW! A smarter way to spot performance issues
We’re excited to announce the launch of the Vitals Overview dashboard in SpeedCurve. It's your new starting point for exploring the performance of your site.
https://www.speedcurve.com/blog/a-smarter-way-to-spot-performance-issues/
0
8
3
reposted by
Cliff Crocker
Alejandra Caraballo
6 months ago
The trans partner of Tyler Robinson had no knowledge about it and was told to delete messages but didn't and instead turned them immediately over to the police and cooperated. Yet, the right is demonizing her and blame everything on trans people despite the trans person here doing the right thing.
87
5254
940
reposted by
Cliff Crocker
Sia Karamalegos
7 months ago
Need help with web performance optimization? Have a tricky new build you're working on? I have two projects wrapping up and am available for new ones starting next week.
sia.codes/services/
loading . . .
Services
Failing your Core Web Vitals? Losing conversions due to poor user experience from slow loading, delayed interactions, or shifting content? I’m here to help.
https://sia.codes/services/
0
22
15
reposted by
Cliff Crocker
Mark Hamill
7 months ago
The body language alone speaks VOLUMES.
#SlavaUkraine
🇺🇦
525
10918
2273
reposted by
Cliff Crocker
Harry Roberts
7 months ago
Same code, same infrastructure, different context. Web performance is sometimes an ‘us thing’ and sometimes a ‘them thing’. For better or worse, we have a responsibility to cater to both.
1
6
5
reposted by
Cliff Crocker
Henri Helvetica 🧑🏾🚀🇭🇹
7 months ago
✨SPDY STREAM 006 ✨ Thank yous!
@cliffcrocker.bsky.social
@karlijnlowik.bsky.social
@bluesmoon.info
We had a great audience, and an even better chat around W3C RUM CG. Video will be edited shortly and shared. The original live stream was pulled down. Thank you again for joining us!
1
3
2
reposted by
Cliff Crocker
Alex Russell
7 months ago
<its_happening.gif>
open-web-advocacy.org/blog/japan-a...
loading . . .
Japan: Apple Must Lift Browser Engine Ban by December - Open Web Advocacy
https://open-web-advocacy.org/blog/japan-apple-must-lift-engine-ban-by-december/
4
54
5
reposted by
Cliff Crocker
Henri Helvetica 🧑🏾🚀🇭🇹
7 months ago
✨ SPDY STREAM 006 ✨ 1PM EST, 5PM CET Tomorrow, I'm hosting a great session for anyone familiar OR unfamiliar with Real User Monitoring (RUM). We'll be joined by experienced RUM data, web performance professionals who will share their expertise but mainly discuss the W3C RUM Community Group. Join us!
add a skeleton here at some point
0
1
1
reposted by
Cliff Crocker
Science Be 🏳️🌈
7 months ago
"The Party told you to reject the evidence of your eyes and ears. It was their final, most essential command." ~ George Orwell, 1984
0
125
29
reposted by
Cliff Crocker
Barry Pollard
7 months ago
Wanna measure Core Web Vitals for for SPAs? Well we've been working on the Soft Navigations API for that and we're launching a new origin trail from Chrome 139. More details here:
developer.chrome.com/blog/new-sof...
And the docs have also been updated:
developer.chrome.com/docs/web-pla...
loading . . .
New Soft Navigations origin trial | Blog | Chrome for Developers
New Soft Navigations origin trial launching to help measure Core Web Vitals for Single Page Applications (SPAs)
https://developer.chrome.com/blog/new-soft-navigations-origin-trial?hl=en
1
15
8
Load more
feeds!
log in