Stoyan Stefanov 🪩 @stoyanstefanov
PerfPlanet, "JavaScript Patterns"... ex-Facebook, Yahoo, WebPageTest https://t.co/Uzv191KSFQ https://t.co/ZOF437DboX phpied.com Los Angeles, CA Joined May 2008-
Tweets7K
-
Followers17K
-
Following553
-
Likes2K
I'll be playing bass in this power trio this Tuesday. On the set we have 30% Nirvana, 30% Misfits, 30% originals by Hullore and 10% Black Sabbath. In other words 100% distorted high-energy punky 45-minute set
I'll be playing bass in this power trio this Tuesday. On the set we have 30% Nirvana, 30% Misfits, 30% originals by Hullore and 10% Black Sabbath. In other words 100% distorted high-energy punky 45-minute set
highperformancewebfonts.com/read/pick-char… A JS snippet to add a feature to fontdrop.info: hand pick characters for subsetting with Glyphhanger. You click around and get a command generated that looks like: $ glyphhanger --format=woff2 --subset="font.otf" --whitelist="U+0025,U+0026...
Our interview episodes with top guests are back — now with the iconic NYC skyline🏙️ Catch the one with🎙️@stoyanstefanov — ex-Facebook/Yahoo, creator of smush.it & YSlow 2.0, and JS books author. Hosted by @stolinski, co-host of @syntaxfm. Watch it…
A chat with @stolinski of @syntaxfm with a nice NYC backdrop at @thejsnation youtube.com/watch?v=JG7uCK…
Started playing with ABC music notation and ABCjs library. Here's a helper/lookup/test page with a list MIDI and ABC notation of the 88 keys of a piano onlinemusictools.com/abcjs/
My first blog post was 2005. I just counted the number of broken external links: 584 out of 2808 (20%), that's a bit excessive. Some are not really broken, e.g. chatgpt gives a 403 to my cURL request, webpagetest gives me 429. But still, wowzers, a lot of dead bodies in 20 years.
"Which local fonts can I use?" writeup, official docs and a web app to gather field data so we can have an authoritative answer to this question now and in the future highperformancewebfonts.com/read/which-loc…
My attempt at clarifying what we mean when we say font, font-family, font-face, typeface, etc. highperformancewebfonts.com/read/font-jarg…
Whoopee! I contributed to the `fontaine` Nuxt.js module github.com/nuxt-modules/f…
Today's mini-post on fonts turned out not that mini. A look into the past and future of `-apple-system` and `BlinkMacSystemFont`. TL;DR: delete them from your CSS code. highperformancewebfonts.com/read/ditch-Bli…
New mini-post, this time on extreme font subsetting highperformancewebfonts.com/read/extreme-s…
A quick note on the importance of adding `crossorigin` when <link>-preloading fonts: highperformancewebfonts.com/read/on-the-or… Otherwise you get double trouble: duplicate font downloads and the preload is unused
Two articles on replacing commonly JS-powered UIs with HTML+CSS: 1) aarontgrogg.com/blog/2023/05/3… 2) calendar.perfplanet.com/2020/html-and-… Know any other good ones? Please share.
After David Lynch's passing people suggested we should celebrate his life and work by doing something weird. So here's a new Client-Side Rendering JavaScript framework called 🐶 Lizzy.js: github.com/stoyan/Lizzy.js
"Menlo Regular" is a font - a specific instance of the Menlo typeface. When we say "Menlo" we may mean three different things: a typeface, a font collection (a .ttc file) or a font family. Confusion? Yes, please.
With Arial and Times New Roman not present on all Androids and Courier not on iOS, it's official: there is no such thing as a "web-safe" font. highperformancewebfonts.com/read/web-safe-…

Sarah Drasner @sarah_edo
283K Followers 3K Following opinions my own. Director of Eng- Web, iOS, Android & Multiplat Infra @google, O'Reilly Author • https://t.co/HhzYWwxYAH, https://t.co/SOjL0RQsDl she/her BLM
Addy Osmani @addyosmani
353K Followers 2K Following Engineering leader, @GoogleChrome • Author • Great user, developer & AI experiences • @ChromiumDev @ChromeDevTools • @GoogleDeepMind
Jake Archibald @jaffathecake
105K Followers 2K Following Developer of sorts at @firefox. No thought goes unpublished. He/him. Also jaffathecake on Mastodon, bsky, Threads etc.
Chris Heilmann codepo... @codepo8
66K Followers 2K Following The robots are coming and we need to make a great example for them. Author, presenter, A11y lover, Online teacher at Skillshare and LinkedIn Learning
Devon Govett @devongovett
39K Followers 1K Following Creator of @parceljs. Engineer @adobe working on React Aria and React Spectrum.
Malte Ubl @cramforce
38K Followers 848 Following Artificial General UI @Vercel CTO. Immigrant 🇺🇸/🇩🇪/acc
Henri Helvetica 🇭�... @HenriHelvetica
9K Followers 1K Following command-h @h2_meetup @spdy_meetup pronounced: on-REE. raconteur Henri Hypertext's Dad #RunnersInTech #100DaysOfPerf It's called Twitter
Lea Verou, PhD @LeaVerou
119K Followers 1K Following I make things to help people make things. @csswg Invited Expert • @w3ctag alum • CS/HCI PhD @MIT Also: 🐘 @[email protected] • 🦋 @lea.verou.me
Adam Rackis @AdamRackis
44K Followers 1K Following Software Engineer. Prev, Riot. TanStack, Next, React, C++ when I'm feeling nasty. Beer, whiskey, coffee snob. Book lover. Jr Developer for life.
Ben Lesh @BenLesh
63K Followers 2K Following #RxJS core team lead. Dad. Art Lover. Literally not paid by the observable, or for anything RxJS-related. My views actually belong to @_jayphelps. he/him
Seb ⚛️ ThisWeekIn... @sebastienlorber
50K Followers 5K Following 🔥 Join 40k devs - Stay up-to-date with React: • 📨 https://t.co/DvLGHeLY5G • @ThisWeekInReact • @docusaurus maintainer • 🇫🇷
Jason Miller 🦊⚛ @_developit
62K Followers 2K Following Platform DX @Shopify. Created @preactjs. Do more with less. https://t.co/z1d6J24DlE @[email protected]
Barry Pollard @tunetheweb
6K Followers 896 Following Chrome Dev Rel helping make the web go faster!. All opinions my own. I’m primarily on 🦋 these days.
Alex Russell @slightlylate
34K Followers 4K Following This place is not a place of honor. No highly esteemed deed is commemorated here. Noting valued is here...This message is a warning about danger.
Tomasz Łakomy @tlakomy
25K Followers 4K Following Staff Engineer / AI Safety @runwayml | ex Engineering Team Lead @Stedi | AWS Hero | Co-founder at @cloudashdev | @eggheadio instructor | AWS Certified | Be kind
Shu @shuding_
47K Followers 2K Following @vercel. @v0, @nextjs, @aisdk, Satori, SWR. Don’t talk unless you can improve the silence.
Minko Gechev @mgechev
57K Followers 220 Following Improving developer productivity @Google Opinions are my own 🇧🇬🇺🇸
Dion Almaer @dalmaer
27K Followers 6K Following Bringing nuance to a knife fight, surprisingly older than @bgalbs. AI Dev @ Google Labs. Prev: Google, Shopify, Ajaxian & more. 🌥: @almaer.com 🧵: dionalmaer
Zeno Rocha @zenorocha
53K Followers 1K Following founder & ceo @resend // creator of https://t.co/TEADhzrXXY • https://t.co/pTVUtvKQIS • https://t.co/gYUH3pDhWi
Ilya Grigorik @igrigorik
70K Followers 335 Following Distinguished Engineer, @Shopify. On a mission to make commerce better for everyone.
Awvauwou @Awvauwou82163
15 Followers 1K Following
Ynourop @Ynourop8397
17 Followers 1K Following
Dwosor @Dwosor00006
38 Followers 1K Following
Roberta Jamieson @RobertaJam84
351 Followers 6K Following Corporate Director Exective at Royal Bank of Canada Lives: Toronto, Ontario From : Montreal, Quebec
Lindsay Harber @HarberLind77452
164 Followers 7K Following
Maybell Nader @MaybellNad19453
155 Followers 7K Following
Erica Z @fs3343791
191 Followers 3K Following Trump 👍 GEN X. ❤️ 🫡Knowledge keeper 🤯. 😂COMPLETELY IN ❤️ with a man I will never meet.😭 (🇺🇸) Yep. I got problems (😥)
Ywiougau @Ywiougau0539
12 Followers 712 Following
Marcos Calderon @Calderon023220
38 Followers 1K Following
Stephen Quinlan @learnda1ly
4 Followers 244 Following I try to learn something everyday. Most interested in Splunk and writing code. I dabble in Ham radio sometimes.
Vadim Akhmadshin @akhmadshin
48 Followers 202 Following Optimistic navigation pioneer, three.js enthusiast. Sharing my knowledge here: https://t.co/U3fUbwEWSB
Immanuel @immanuel_vibe
459 Followers 7K Following DevOps, SRE, certified Kubernetes admin. Open to international remote. Seeking visa sponsorship https://t.co/F885NkWYOE
Hacker Michelle @HackerMike35
17 Followers 228 Following
Tony Olsson @Bobotech79
1K Followers 6K Following IT Consultant | MERN Stack | .Net | Web Apps | Follow me :)
Morningside Kicker @morningsidekick
13 Followers 82 Following
Etweauwkor @Etweauwkor4775
20 Followers 846 Following
Eadauter @Eadauter988
28 Followers 1K Following
Ropum @Ropum332
24 Followers 1K Following
Jeege @Jeege1770
44 Followers 2K Following
Gavin Mckew @gavinmckew
1K Followers 4K Following Director at Shero Commerce | Shopify & Ecommerce Expert | Driving Digital Growth and Innovation with 25 years in the game.
Mills Brandi @brandi_mil29881
35 Followers 893 Following
Francois @francoisfeed
49 Followers 548 Following
Terria Tomara @ORobertlee6036
1 Followers 98 Following Recruiting webshell engineers to penetrate websites, w ith a monthly salary of up to $100,000. If interested, please contact https://t.co/cK6TbDGziY
Suetarez @SuetarezKJcS
82 Followers 3K Following
Darren Nation @darren_nat67967
180 Followers 223 Following
Allen Mullins @Texanyankee83
1K Followers 2K Following
Facundo_pettersson @FacundoPetters1
21 Followers 130 Following Programador en casi todo.... Mid Level en JavaScript... React/nodejs
Murugan sankarapuram @murugang2018533
767 Followers 3K Following மு. மாவட்ட இளைஞர் அணி துணை அமைப்பாளர்
ByteWalker @ByteWalking
12 Followers 2K Following
Ihor AB (IV) Rh+ @belivingsinep
24 Followers 245 Following Життя має сенс лише тоді, коли ти обговорюєш цю тему з твоїми дітьми і онуками
Jorhex @Jorhex50018
4 Followers 130 Following
pawelpokrywka.eth @pawel_pokrywka
87 Followers 978 Following
Noël S. Somdalen @NoelSomdalen
24 Followers 122 Following
Franco Saxa @francosaxa
371 Followers 3K Following
Elizabeth @AsherBella2005
268 Followers 1K Following
Sarah Drasner @sarah_edo
283K Followers 3K Following opinions my own. Director of Eng- Web, iOS, Android & Multiplat Infra @google, O'Reilly Author • https://t.co/HhzYWwxYAH, https://t.co/SOjL0RQsDl she/her BLM
Addy Osmani @addyosmani
353K Followers 2K Following Engineering leader, @GoogleChrome • Author • Great user, developer & AI experiences • @ChromiumDev @ChromeDevTools • @GoogleDeepMind
Jake Archibald @jaffathecake
105K Followers 2K Following Developer of sorts at @firefox. No thought goes unpublished. He/him. Also jaffathecake on Mastodon, bsky, Threads etc.
Chris Heilmann codepo... @codepo8
66K Followers 2K Following The robots are coming and we need to make a great example for them. Author, presenter, A11y lover, Online teacher at Skillshare and LinkedIn Learning
Devon Govett @devongovett
39K Followers 1K Following Creator of @parceljs. Engineer @adobe working on React Aria and React Spectrum.
Malte Ubl @cramforce
38K Followers 848 Following Artificial General UI @Vercel CTO. Immigrant 🇺🇸/🇩🇪/acc
Henri Helvetica 🇭�... @HenriHelvetica
9K Followers 1K Following command-h @h2_meetup @spdy_meetup pronounced: on-REE. raconteur Henri Hypertext's Dad #RunnersInTech #100DaysOfPerf It's called Twitter
Lea Verou, PhD @LeaVerou
119K Followers 1K Following I make things to help people make things. @csswg Invited Expert • @w3ctag alum • CS/HCI PhD @MIT Also: 🐘 @[email protected] • 🦋 @lea.verou.me
Ben Lesh @BenLesh
63K Followers 2K Following #RxJS core team lead. Dad. Art Lover. Literally not paid by the observable, or for anything RxJS-related. My views actually belong to @_jayphelps. he/him
Jason Miller 🦊⚛ @_developit
62K Followers 2K Following Platform DX @Shopify. Created @preactjs. Do more with less. https://t.co/z1d6J24DlE @[email protected]
Barry Pollard @tunetheweb
6K Followers 896 Following Chrome Dev Rel helping make the web go faster!. All opinions my own. I’m primarily on 🦋 these days.
Alex Russell @slightlylate
34K Followers 4K Following This place is not a place of honor. No highly esteemed deed is commemorated here. Noting valued is here...This message is a warning about danger.
Vitaly Friedman 🇺�... @vitalyf
14K Followers 367 Following UX Designer/Consultant • Founder, editor-in-chief, creative lead @SmashingMag • Speaker • Loves good design patterns and doesn’t give up easily. 🍣
Minko Gechev @mgechev
57K Followers 220 Following Improving developer productivity @Google Opinions are my own 🇧🇬🇺🇸
Dion Almaer @dalmaer
27K Followers 6K Following Bringing nuance to a knife fight, surprisingly older than @bgalbs. AI Dev @ Google Labs. Prev: Google, Shopify, Ajaxian & more. 🌥: @almaer.com 🧵: dionalmaer
Zeno Rocha @zenorocha
53K Followers 1K Following founder & ceo @resend // creator of https://t.co/TEADhzrXXY • https://t.co/pTVUtvKQIS • https://t.co/gYUH3pDhWi
Ilya Grigorik @igrigorik
70K Followers 335 Following Distinguished Engineer, @Shopify. On a mission to make commerce better for everyone.
Bruce Lawson @brucel
29K Followers 2K Following I dislike fascism, so now posting at @[email protected]. My music: https://t.co/buJ4452vba.
David Walsh @davidwalshblog
83K Followers 481 Following Senior Engineering Manger, former Staff Software Engineer. MooTools Alumni, Javascript Fanatic, and open source lover. Former @Mozilla, @SitePen
Patrick Meenan @patmeenan
9K Followers 338 Following Web performance @googlechrome (tweets are my own, not those of my employer). ☁️: @patmeenan.bsky.social 🧵: patrick.meenan
Nicolas Hodin ⚡ @phenixx
580 Followers 1K Following Frontend & Webperf specialist - Speed is king ! Webperf Expert @fasterize #remoteworker
Bramus @bramus
14K Followers 748 Following Chrome DevRel at Google (CSS + Web UI). @CSSWG Member. Former University Lecturer. PADI Divemaster. Blogs at @bramusblog. I’m primarily on 🦋 nowadays.
Nadia Makarevich 🇺... @adevnadia
4K Followers 221 Following 📝 DeveloperWay: https://t.co/rxBF0rSmhl 📘 Advanced React book: https://t.co/b0fbhBRUcr 📘 Web Performance Fundamentals: https://t.co/FL84OZwMiG
Music Tectonics: 2025... @MusicTectonics
2K Followers 955 Following Conference, podcast, online events, & more, w/ @rps_pr & @dmitrivietze
maudnals @maudnals
1K Followers 666 Following Developer Relations @ Google, Chrome, web privacy and security. Tweets my own.
jess @_jessicasachs
14K Followers 3K Following FOSS nerd @HeroDevs Prev @ionicframework, @faker_js, @cypress_io, @vuejs ecosystem
Ruby Jane 🇵🇭 �... @rubyjane88
400 Followers 2K Following frontend developer | published book author |
dotJS @dotJS
6K Followers 149 Following The world’s sharpest JavaScript conference is back on April 3 2025 - part of the @dotConferences series
Nessrine @nessrinebm
1K Followers 928 Following Currently @GoogleCloud | Board member of @dotconferences 🎤 | Hosting @dotaiconf 🟡 | Ex @Salesforce @Microsoft @TEDx 👩🏻💻
Phil Wolstenholme @wo... @philw_
1K Followers 2K Following Lead frontend eng, https://t.co/exGDNqmh9Y @coopuk @coopdigital. Interested in the web (FE, #a11y, perf), environment, bikes (everyday/utility) and science.
real_ozcoder 💉💉... @real_ozcoder
17 Followers 10 Following
Paul Williams @pcwilliams
2K Followers 4K Following Engineering @Bloomberg; tech/music/believing in young people; raising £ for STEM/music education at @bigchange_ @mission44 @stemettes etc. Opinions my own.
Adam McKerlie @adammckerlie
1K Followers 819 Following I code, I eat, I bake bread. Director of Engineering at @vidyard (he/him), previously @getsentry and @gadventures and more
Magnus Dahl (Magnus@w... @twittmdl
916 Followers 2K Following Engineering manager for the platform team @ https://t.co/1dLvJGSo4Q. Web performance, scalability and security. Tweets are my own.
bkardell 🐦 @briankardell
3K Followers 2K Following Brian, you know, from the Internet. Dev Advocate at Igalia | Co-author Extensible Web Manifesto | Standards Dude (Igalia AC/OpenJS) https://t.co/XXE6f9UrQR | he/him
Keerthana Krishnan @KeerthanaK17
1K Followers 2K Following Exactly between Amy Santiago and Yennefer of Vengeburg. Software Engineer. Speaker. Writer. Creator. Work-in-progress ⚙️🔥🌴🌶️😎 She/her
Vinicius Dallacqua @WebTwitr
877 Followers 689 Following Into browsers and agentic systems. Building https://t.co/cwNdvRsKCq and https://t.co/SPbksDxYBV Into film photography and web performance nerd.
Mateusz Krzeszowiak @krzksz
436 Followers 218 Following Web performance consultant @Shopify, previously @AllegroTech.
KΞNNETH ・ ケニ�... @kennethrohde
6K Followers 3K Following 🌍 Principal Engineer, Web Platform Engineering @intel 🇩🇰 🌱 Co-inventor PWA 👷 @ChromiumDev 🌎 @W3CTAG alumni 🐡 Project Fugu 🏆 Google GDE, Microsoft MVP
Jamie Indigo 👾 100... @Jammer_Volts
18K Followers 3K Following She/they; Wicked Witch of the JS; author of #RichSnippets; Tabaxi/Rogue; Public Speaker; I go down 🐇🕳 & learn in public. Tweets are my own nonsense
Henry Price @Henryprice1
111 Followers 348 Following Technical SEO Lead and Web Development enthusiast
NitroPack @getnitropack
849 Followers 523 Following Speed up your website the easy way⏱ NitroPack has everything you need for a fast website📱
Ethan Gardner @EthanGardner
424 Followers 464 Following Full stack developer. Edge computing and #webperf. Mentor at @mentorcruise. Guitarist, extreme sports weekend warrior, and proud husband. he/him
Jacob 'kurtextrem' Gr... @kurtextrem
3K Followers 2K Following Sr. Performance Engineer @Framer · webperf/UX/security · @[email protected]
Elena Kay @lebobonog
55 Followers 49 Following A web developer and a big fan of outdoors, travels and photography
Julian Jandl @hoebbelsB
711 Followers 560 Following Lead Performance Engineer, Trainer & Consultant @PushBased. #RxAngular core maintainer. making things fast #webperf. #Angular. #RxJS.
Michael Hladky @Michael_Hladky
11K Followers 283 Following Trainer and consultant @PushBased #Angular @NxDevTools #rxjs #webperf #TypeScript #GDE #MVP, creator of #RxAngular
Aleksej Kulikov @alekseykulikov_
1K Followers 887 Following Founder of @__treo, trying to make the web faster #webperf Bootstrapper, dad, hobby musician.
philhawksworth.dev �... @philhawksworth
10K Followers 834 Following DevRel at @deno_land. Previously @netlify, @rga. Mostly at https://t.co/yAY99bmjnI
juan ferreras @juan_ferreras_
280 Followers 782 Following Engineer by day, over-engineer by night. Passionate about #webperf. prev: co-founded @LabelRadar (acq.)
Cezary Tomczyk @cezarytomczyk
207 Followers 133 Following Inventor, digital accessibility #a11y, #seo, software engineer, manager, mentor, and music composer. Working on unique in the world https://t.co/S5AJDlcwNI
Laura Mackenzie @laurabmackenzie
62 Followers 210 Following Software Engineer for Microsoft working on @MicrosoftLearn. 🇨🇦✈️🌊🌲
Liang Gong @JacksonGL2
15 Followers 107 Following
Paul Kinlan @Paul_Kinlan
23K Followers 3K Following Lead for Chrome DevRel @ Google. Progressive Web Apps, Mr Web Intents. Dev of many things: Twollo, Twe2, Ahoyo, FriendDeck and https://t.co/f0NA46oXCO @[email protected]
Benjamin Dunphy @Benghamine
2K Followers 3K Following @aiDotEngineer co-founder. Former @reactathon & @jamstackconf organizer. Partner, @LiftedPlate
Omer Kenet @omerkenet
191 Followers 514 Following Head of product @CoduxIDE by @Wix, Previously co-founded @Rapid_UI and GonoGo, doing some other stuff as well
👩🏾💻LaNice... @LaNicePowell
2K Followers 1K Following #blacklivesmatter Mother | #SoftwareEngineer |#devRel | #teacher | tutor | panelist #Blacktechtwitter IG:https://t.co/JTkWSwqT60
Tal Weltsch @TalWeltsch
184 Followers 575 Following Full stack marketer @wix. Everything React. Working with developers by day. Baking at night. check out our newest @coduxIDE. DMs are open 👋
Scott Moore @loadtester
2K Followers 337 Following Software Engineer. Content Creator. Performance Tour, DevOps Driving, Security Champions, SMC Journal, AI Testing World. 503 Server Busy dude.
Tanner Hodges @atannerhodges
310 Followers 63 Following Relearning the obvious. Podcasting #webperf stories @CatchingUpDev. 🐘 @[email protected]
Amier Saleh @AmierOSaleh
30 Followers 1K Following
Stefan Wintermeyer @wintermeyer
2K Followers 165 Following Father of two who tells terrible dad jokes. Mediocre programmer. Old school full stack guy. Topics: Web (Phoenix + Rail), VoIP (Asterisk) and Social Engineering
Terrible Maps @TerribleMaps
1.7M Followers 1K Following The home of terrible maps with a pinch of humour [email protected]
Erik Witt @EWErikWitt
130 Followers 90 Following VP Product and Web Performance Engineer at SpeedKit. https://t.co/PgVvhPgMP8
Google Developer Grou... @gdg_nyc
2K Followers 635 Following #DevFest NYC 2024 is here! Looking forward to diving into Responsible AI. 📆 Thurs., Nov. 21, 2024 at Google NYC 👉 https://t.co/ry8zemuXsK