Firefox Performance
@firefoxperformance.bsky.social
Working to make Firefox and the web faster. #firefox #webperf
Reposted by Firefox Performance
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
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
October 15, 2025 at 9:49 PM
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
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
Reposted by Firefox Performance
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...
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...
October 15, 2025 at 8:19 AM
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...
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...
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/...
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/...
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...
blog.mozilla.org
October 15, 2025 at 12:46 PM
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/...
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/...
Reposted by Firefox Performance
youtube.com/live/apYYhHJINFY "ask me anything" with Mozilla's Web Performance team. Come and chat with us!
Ask a Fox event - AMA with the Web Performance team
YouTube video by Mozilla Developer
youtube.com
September 23, 2025 at 4:18 PM
youtube.com/live/apYYhHJINFY "ask me anything" with Mozilla's Web Performance team. Come and chat with us!
Reposted by Firefox Performance
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
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
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…
luma.com
September 1, 2025 at 12:56 PM
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
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
Reposted by Firefox Performance
Standing room only for "How Browsers Really load Web Pages" by @programmingart.bsky.social #fosdem
February 1, 2025 at 2:07 PM
Standing room only for "How Browsers Really load Web Pages" by @programmingart.bsky.social #fosdem
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 2025 - Schedule
fosdem.org
February 1, 2025 at 5:44 PM
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
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
February 1, 2025 at 5:23 PM
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
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
February 1, 2025 at 4:29 PM
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
Alexander Krizhanovsky is now talking about scheduling HTTP streams fosdem.org/2025/schedul... fosdem.org/2025/schedul... #webperf #fosdem
February 1, 2025 at 3:45 PM
Alexander Krizhanovsky is now talking about scheduling HTTP streams fosdem.org/2025/schedul... fosdem.org/2025/schedul... #webperf #fosdem
February 1, 2025 at 3:30 PM
Next up is @andydavies.me helping us to make sense of the Long Animation Frames API. fosdem.org/2025/schedul... #webperf #fosdem
February 1, 2025 at 2:58 PM
Next up is @andydavies.me helping us to make sense of the Long Animation Frames API. fosdem.org/2025/schedul... #webperf #fosdem
We kick off with @programmingart.bsky.social showing us how browsers REALLY load web pages to a full room! 🤡 fosdem.org/2025/schedul...
February 1, 2025 at 2:14 PM
We kick off with @programmingart.bsky.social showing us how browsers REALLY load web pages to a full room! 🤡 fosdem.org/2025/schedul...
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 2025 - UA2.220 (Guillissen)
fosdem.org
February 1, 2025 at 11:31 AM
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...
The schedule for the #webperf devroom at @fosdem.bsky.social 2025 has been published! Check it out at fosdem.org/2025/schedul... #fosdem
FOSDEM 2025 - Web Performance
fosdem.org
December 20, 2024 at 1:54 PM
The schedule for the #webperf devroom at @fosdem.bsky.social 2025 has been published! Check it out at fosdem.org/2025/schedul... #fosdem
We’ve just released a Chrome extension for the Firefox Profiler! 🚀 See how it can enhance your performance workflow in our latest blog post!
blog.mozilla.org/performance/...
blog.mozilla.org/performance/...
Introducing the Chrome Extension for the Firefox Profiler – Mozilla Performance
What is the Firefox Profiler? The Firefox Profiler is a performance analysis tool designed to help developers understand and optimize the performance of websites and Firefox itself. It allows you ...
blog.mozilla.org
December 12, 2024 at 5:20 PM
We’ve just released a Chrome extension for the Firefox Profiler! 🚀 See how it can enhance your performance workflow in our latest blog post!
blog.mozilla.org/performance/...
blog.mozilla.org/performance/...
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
November 28, 2024 at 4:06 PM
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
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
FOSDEM 2025 - Call for Participation - MozillaWiki
wiki.mozilla.org
November 18, 2024 at 12:37 PM
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