Working to make Firefox and the web faster. Find us on Bluesky at @firefoxperformance.bsky.social #firefox #webperf
Joined November 2023
- Tweets 22
- Following 46
- Followers 321
- Likes 17
2 Photos and videos
15 Oct 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…
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20 Dec 2024
The schedule for the #webperf devroom at @fosdem
2025 has been published! Check it out at fosdem.org/2025/schedule/tra… #fosdem
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12 Dec 2024
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…
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28 Nov 2024
Hurry, there's just a few days left to submit a talk for the #webperf devroom at @fosdem 2025! wiki.mozilla.org/Performance… #fosdem #cfp
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31 Oct 2024
We're excited to share that @mozilla and @Wikimedia will once again be hosting a #webperf devroom at @fosdem 2025! The call for participation is now open until December 1st. Find details on how to submit your proposal at wiki.mozilla.org/Performance… #fosdem #cfp
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25 Oct 2024
The Firefox Performance team are organising a meet-up on the evening before the popular performance.now() conference in Amsterdam next month. Learn more, and find out who’s speaking at lu.ma/z1qt2a63
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Firefox Performance retweeted
26 Mar 2024
📢 For #100DaysOfPerf Day 64, I am overjoyed to announce the return of the @towebperf meetup. In Toronto? Join us in the Mozilla office to hear from the @FirefoxPerf Team guests. This is a very special moment. More TBA. 🏎️💨 🎉
#webperf
RSVP 🎟️: bit.ly/100dop-day64
ALT TORONTO WEB PERFORMANCE MEETUP PRESENTS: FIREFOX PERFORMANGE TEAM SPEAKERS TBA WEDNESDAY APRIL 17 2024 MOZILLA TORONTO OFFICE 6-9PM Image of a silhouette of a 911 Porsche
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Firefox Performance retweeted
17 Mar 2024
🚀 #100DaysOfPerf Day 56. This year at @fosdeml, @FirefoxPerf co-sponsored the performance room which featured great talks from the 🇪🇺 community. In this blogpost, @davehunt82 summarizes the presentations w/ links to 🎥 recordings. Enjoy!
#webperf
📝 bit.ly/100dop-day56
ALT Mozilla performance: browsing at the speed of right.
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Firefox Performance retweeted
11 Mar 2024
Mozilla is thrilled to be shipping Speedometer 3 today alongside other browser engine developers.
This is the most realistic browser benchmark to date and has been pushing all the engines to up their game throughout the last year. 🌬️ mzl.la/3v5BENU
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21 Feb 2024
We had so much fun learning about #webperf at @fosdem! Thank you to everyone that joined our devroom in person or remotely. You can now revisit or catch up on all the talks, which we've gathered together at blog.mozilla.org/performance… See you again next year!
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Firefox Performance retweeted
4 Feb 2024
fosdem.org/2024/schedule/tra… The Web Performance track at fosdem just started! Streaming live 🤩
Now : The importance of Web Performance to Information Equity
By Bas Schouten
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Firefox Performance retweeted
4 Feb 2024
We’re kicking off the #webperf developer room at @fosdem in room H.2214 with Bas Schouten from @mozilla talking about performance for information equity. Watch live at live.fosdem.org/watch/h2214
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25 Jan 2024
The #webperf devroom at @fosdem in Brussels on Sunday 4th February will be streamed live, but if you're able to join us in person you'll also be able to pick up some of these stickers! See the full schedule at buff.ly/3u6kpeP
ALT Packs of stickers with designs including a shiny Mozilla logo, Firefox developer edition logo, and Firefox profiler.
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21 Dec 2023
The @fosdem 2024 #webperf schedule has been published! Thank you to everyone who submitted a proposal. We can't wait to see you all in Brussels! fosdem.org/2024/schedule/tra…
10 Nov 2023
We're excited to share that @mozilla and @Wikimedia will be hosting a #webperf devroom at @fosdem 2024! The call for participation is now open until December 1st. Find details on how to submit your proposal at wiki.mozilla.org/Performance… #fosdem #cfp
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Firefox Performance retweeted
23 Nov 2023
I just submitted 3 proposals for the Web Performance devroom @fosdem 2024!
One on analyzing @RUMArchive data, one on the new WebTransport protocol and one a Resource Prioritization deep-dive! 👇
You can submit until 1 December as well:
wiki.mozilla.org/Performance…
See you there! 🚀
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21 Nov 2023
We’ve added markers in Firefox Profiler to indicate LargestContentfulPaint, which is now available in Firefox Nightly. This allows users to see LCP and other metrics directly on the profiles they capture. Here’s an example profile: share.firefox.dev/3G2wynn developer.mozilla.org/en-US/…
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20 Nov 2023
Remember to submit your talk proposals for the #webperf devroom at FOSDEM by Dec 1!
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Faster than ever 🔥
We've been working hard behind the scenes to create a seamless online experience and this past year is our best to date. Learn more here blog.mozilla.org/en/products…
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Firefox Performance retweeted
9 Nov 2023
<iframe loading=lazy> has landed. Lazily loaded iframes are only loaded when visible, speeding up initial page load.
See bugzilla.mozilla.org/1860729
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10 Nov 2023
We're excited to share that @mozilla and @Wikimedia will be hosting a #webperf devroom at @fosdem 2024! The call for participation is now open until December 1st. Find details on how to submit your proposal at wiki.mozilla.org/Performance… #fosdem #cfp
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