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Reposted by Firefox Performance

Barry Pollard @tunetheweb.com · 15/10/2025

I spy with my little eye both INP and LCP enabled by default in the latest Safari Tech Preview. What with Firefox landing INP in stable yesterday (on top of LCP that they already supported) this means we'll soon have cross-browser support for these two Core Web Vitals! #interop2025 #CoreWebVitals

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Reposted by Firefox Performance

erwinhofman.bsky.social @erwinhofman.bsky.social · 15/10/2025

Nerdy stuff! @mozilla.org #Firefox just enabled support for #INP with v144 🎉 I dived into our raw RUMvision data. And yep, can confirm that it works when using Google's web-vitals #JavaScript library 😍 (updated) article + chart + baseline badges in a blogpost: www.rumvision.com/blog/firefox...

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Firefox Performance @firefoxperformance.bsky.social · 15/10/2025

Firefox 144 now supports INP! 🦊 We just shipped interactionId, the piece that makes Interaction to Next Paint work. It helps browsers connect events from the same interaction and measure how responsive pages really feel. More here: blog.mozilla.org/performance/...

blog.mozilla.org

Firefox 144 ships interactionId for INP – Mozilla Performance

TL;DR Firefox 144 ships PerformanceEventTiming.interactionId, which lets browsers and tools group events that belong to the same user interaction. This property is used to calculate Interaction to Nex...

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Reposted by Firefox Performance

Julien W @julienw.eurosky.social · 23/09/2025

youtube.com/live/apYYhHJINFY "ask me anything" with Mozilla's Web Performance team. Come and chat with us!

youtube.com

Ask a Fox event - AMA with the Web Performance team

YouTube video by Mozilla Developer

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Reposted by Firefox Performance

performance.now() conference @perfnow.nl · 01/09/2025

performance.now() is coming! The night before the conference, 29th of October, @mozilla.org organises performance.sync(), the pre-meetup where you can meet your peers to mentally prepare for two days of information overload. They're also looking for a few people to present. luma.com/ziykhh4y

luma.com

performance.sync() 2025 · Luma

performance.sync() is a meet-up taking place on the evening before the performance.now on Wednesday October 29th! We are looking for speakers! Submit your…

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Reposted by Firefox Performance

Benji Weber @benjiweber.com · 01/02/2025

Standing room only for "How Browsers Really load Web Pages" by @programmingart.bsky.social #fosdem

"Tight Mode": How Browsers Really Load Web Pages. Robin Marx @programmingart at #Fosdem

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

That’s a wrap! Thank you to all of our speakers, and to everyone watching either in the room or on the live stream. While the #webperf is over, there’s a full day of sessions tomorrow! Check out fosdem.org/2025/schedule/ for details. #fosdem

fosdem.org

FOSDEM 2025 - Schedule

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

Last, but certainly not least, we have @canova.bsky.social showing us how to collaborate using the Firefox Profiler. fosdem.org/2025/schedul... #webperf #fosdem

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

Eric Seckler is sharing how Google doubled the Speedometer score over the last two years and developed the LoadLine benchmark. fosdem.org/2025/schedul... linkedin.com/in/ericseckler #webperf #fosdem

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

Alexander Krizhanovsky is now talking about scheduling HTTP streams fosdem.org/2025/schedul... fosdem.org/2025/schedul... #webperf #fosdem

Alexander Krizhanovsky presenting a slide with the title “http streams” in front of an audience.

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

The #webperf room was so full that folks were watching the live stream from just outside! #fosdem

At least 10 people in a room watching a live stream on a laptop.

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

Next up is @andydavies.me helping us to make sense of the Long Animation Frames API. fosdem.org/2025/schedul... #webperf #fosdem

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

We kick off with @programmingart.bsky.social showing us how browsers REALLY load web pages to a full room! 🤡 fosdem.org/2025/schedul...

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Firefox Performance @firefoxperformance.bsky.social · 01/02/2025

We’re looking forward to kicking off the #webperf devroom at @fosdem.bsky.social in a couple of hours! Check out the schedule and watch live at fosdem.org/2025/schedul...

fosdem.org

FOSDEM 2025 - UA2.220 (Guillissen)

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Firefox Performance @firefoxperformance.bsky.social · 20/12/2024

The schedule for the #webperf devroom at @fosdem.bsky.social 2025 has been published! Check it out at fosdem.org/2025/schedul... #fosdem

fosdem.org

FOSDEM 2025 - Web Performance

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Firefox Performance @firefoxperformance.bsky.social · 28/11/2024

Hurry, there's just a few days left to submit a talk for the #webperf devroom at @fosdem.bsky.social 2025! wiki.mozilla.org/Performance/... #fosdem #cfp

wiki.mozilla.org

FOSDEM 2025 - Call for Participation - MozillaWiki

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Firefox Performance @firefoxperformance.bsky.social · 18/11/2024

We're excited to share that Mozilla and @wikimedia.bsky.social will once again be hosting a #webperf devroom at @fosdem.bsky.social 2025! The call for participation is open until December 1st. Find details on how to submit your proposal at wiki.mozilla.org/Performance/... #fosdem #cfp

wiki.mozilla.org

FOSDEM 2025 - Call for Participation - MozillaWiki

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