#CoreWebVitals is an active hashtag on Bluesky. In the last 30 days, 10 people shared 23 posts with it — around 1 a day. Activity is up 250% versus the previous week, peaking on Sep 16 with 5 posts.

Posts with #CoreWebVitals

Alex Russell

@infrequently.org

almost 2 years ago

Interesting to see folks from Vercel reacting to my post[1] with _"I don't think there's anything I could say that would make them change their mind about Next.js 🤷",_ when I *specifically* highlight that what changes my mind is data. Data like this: [1]: infrequently.org/2024/11/…

A chart I derived from the 2024 Web Almanac data showing CWV pass rates before and after the INP rollout. In general, tools with lighter default payloads (Astro, Rails) started better and (importantly) were less likely to regress as a result of INP's introduction.

Or put another way, React-burdened stacks (Next.js, Next.js w/ App Router, and Gatsby) started with less than 50% pass rates and regressed the most when fairer, more representative metrics were added.

2 2 34

Barry Pollard

@tunetheweb.com

9 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

Jen Simmons @jensimmons.bsky.social

Safari 26.2 is here with 65 features + 165 bug fixes — including field-sizing, Navigation API, Largest Contentful Paint, command & commandfor, CHIPS opt-in partitioned cookies, scrollend event, random(), WebGPU in WebXR, scrollbar-color, hidden=until-found and much more! webkit.org/blog/17640/w...

webkit.org

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Barry Pollard

@tunetheweb.com

9 months ago

Answering some of your questions about what it means now LCP and INP are "Baseline Newly available" across all major browsers. Let me know if you have any more! web.dev/blog/lcp-and... #CoreWebVitals #webperf

web.dev

LCP and INP are now Baseline Newly available | Blog | web.dev

LCP and INP are now Baseline Newly available as of December 12, 2025.

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Joan León

@nucliweb.net

11 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

A speaker stands on stage at the Performance.now() 2025 conference, presenting a slide titled “LoAF Helpers: Advanced Debugging in DevTools.” The slide displays details about WebPerf Snippets and a highlighted URL link. The audience is seated in front of the stage, watching the presentation.

0 6 18

Henri Helvetica 🧑🏾‍🚀🇭🇹

@henrihelvetica.bsky.social

almost 2 years ago

🎙️ I'm getting super excited for Performance Now in AMS 🇳🇱. My #CoreWebVitals mics are ready. Will you be there?? Come see me and we can jump on The HALLWAY TRACK streams, and talk web performance. 🔸 Stay tuned as I'll be posting links to the live streams here so you can watch as much as possible

picture of three microphones, in their cases, each with different windscreens: one green, one yellow and the last one red.
in the background, a audio interface, recorder by ZOOM.

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Barry Pollard

@tunetheweb.com

12 months ago

“Added preview support for Event Timing API (Interaction to Next Paint)” #webperf #CoreWebVitals

IntentToShip @intenttoship.dev

Webkit: Release Notes for Safari Technology Preview 229

webkit.org

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@erwinhofman.bsky.social

9 months ago

Look at that 🤩 Safari now supports #LCP and #INP as well! And we can clearly see it in our data 💪 Dates: 🗓️ Nov 3rd: Safari rolled out support in their 26.2 beta release 🗓️ Dec 12th: Safari released it to the public Huge update from the WebKit team, and for #CoreWebVitals in general 👏 1/3

Chart of INP + LCP metrics in Safari over time

3 2 15

Tammy Everts 🍁

@tammyeverts.com

almost 2 years ago

Did you know #webperf / #ux metrics (like #CoreWebVitals) are NOT supported by Safari? You're not alone! This gap means we have no visibility into a huge swathe of users. Excellent piece by @cliffcrocker.bsky.social explaining the problem and potential solutions. www.speedcurve.com/blog/c….

www.speedcurve.com

SpeedCurve | A Holiday Wish: Core Web Vitals in Safari

Did you know that key performance metrics, like Core Web Vitals, aren't supported in Safari? Here's why, and what we and the rest of the web performance community are doing to fix it.

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Henri Helvetica 🧑🏾‍🚀🇭🇹

@henrihelvetica.bsky.social

almost 2 years ago

The Wes Bos video about the McMaster website performance *may* achieve 1M views by end of this week (currently at ~940k), if not by the 4th week. Just about web performance. Imagine that! #ecommerce #webperformance #sitespeed #webperf #perfmatters #corewebvitals #pagespeed

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Tammy Everts 🍁

@tammyeverts.com

over 1 year ago

My annual "page bloat" analysis and update covers: 👋 Page growth YOY 👋 How page bloat hurts your business and users 👋 How it affects #CoreWebVitals (and potentially #SEO) 👋 Page size targets 👋 How to track page size & complexity 👋 How to fight regressions Here: www.speedcurve.com/blog/p….

All-caps text that says "please don't just shout LEEEEEEEROY JENKINS! as you throw fireballs of slow, bloated code into the world" overlaid on a screenshot from the video game DOOM.

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Barry Pollard

@tunetheweb.com

about 1 year ago

LCP and INP are part of Interop 2025 so hopefully coming to Firefox and Safari this year! 🥳 Checking in, I'm seeing: Firefox - LCP is in stable 🎉 - INP is behind a flag 🔜? Safari - LCP is being actively worked judging by spec questions 🏗️ - INP is available behind a flag in STP 🔜? #CoreWebVitals

1 1 12

Marketing News

@marketingnews.bsky.social

3 days ago

FYI: Explaining Core Web Vitals #CoreWebVitals #WebPerformance #UserExperience #SEO #GoogleAnalytics

ppc.land

Explaining Core Web Vitals

Core Web Vitals are Google's three field metrics for page loading, responsiveness and visual stability, scored from real Chrome visits at the 75th percentile.

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