Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@mmocny.com - I can't seem to text you here somehow but it was super fun hanging out with you today and I hope you have a safe trip back ☺️👋🏻 000
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@rich-harris.dev might have the best demo app I have ever seen 😁 at #perfNow 1141
Reposted by Keerthana KrishnanMarcy Sutton Todd @marcysutton.com · 31/10/2025Here are mine! Thanks for a wonderful conference 🫶🏻 bit.ly/a11y-perfnow25bit.lyAccessibility & Performance - perfNow 2025 - Marcy Sutton ToddAccessibility & Performance performance.now() 2025 By Marcy Sutton Todd - Senior Engineer, Frontend Infrastructure at Khan Academy Hi, PerfNow! I'm here to talk to you about the intersection of access... 062
Reposted by Keerthana KrishnanHarry Roberts @csswizardry.com · 31/10/2025speakerdeck.com/csswizardry/...speakerdeck.comHow to Think Like a Performance EngineerAs awareness and tooling around site speed have been improving at a very exciting rate, has performance testing actually become any easier? Any more str… 0102
Reposted by Keerthana KrishnanEthan Gardner @ethangardner.com · 31/10/2025If you are looking for the slides from my PerfNow 2025 talk, Web Performance Allies, they are at speakerdeck.com/ethangardner...speakerdeck.comWeb Performance Allies - PerfNow 2025Image credits: https://commons.wikimedia.org/wiki/File:TAR_Detour_clue.png https://commons.wikimedia.org/wiki/File:Carach_Angren_M%C3%A9an_22_08_200… 033
Reposted by Keerthana KrishnanRiccardo Margiotta @riccardomargiotta.co.uk · 31/10/2025Super talk from @tunetheweb.com on Speculation Rules. Been nervous about using them for fear of false positives on things like Google Analytics. The upcoming prerender_until_script logic sounds like exactly what I need - you'll benefit from fetching subresources, but won't execute scripts. #PerfNow 0103
Reposted by Keerthana KrishnanKarlijn Löwik @karlijnlowik.bsky.social · 31/10/2025Halloween at #perfnow, pirates and vampires. A.k.a sword fight, the sequel. Or... How RUMvision slayed Akamai😇😆 (jk) 2143
Reposted by Keerthana KrishnanTim Kadlec @tkadlec.bsky.social · 31/10/2025I appreciate everyone at #perfnow letting me have my "old man yells at cloud" moment this morning. Slides are now up: noti.st/tkadlec/3imH...noti.stStubborn Empathy by Tim KadlecOne of the most important roles we play on the web is as the users line of defense, which requires that we demonstrate stubborn empathy on their behalf. Unfortunately, that concept is all too easy to ... 2163
Reposted by Keerthana KrishnanHenri Helvetica 🧑🏾🚀🇭🇹 @henrihelvetica.bsky.social · 31/10/2025For those who just watched @tunetheweb.com 's presentation, this is the SPDY STREAM he just posted about w/ @yoav.ws + @krzksz.bsky.social of Shopify. Thank again Barry! #perfNow 🎥 youtu.be/DHgoULxvuJ8 0144
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025Do you have React Server Components? Have you used <Suspense> correctly? Fascinating investigations into rendering 🕵🏻♀️ by @adevnadia.bsky.social at #perfNow 070
Reposted by Keerthana KrishnanHenri Helvetica 🧑🏾🚀🇭🇹 @henrihelvetica.bsky.social · 31/10/2025📌 A few year ago, I dared to say that React was the new WordPress. What did I mean?? Devs have for the most part adopted the platform just because. That show of hands during this Nadia Makarevich's talk is proof of it. Orgs hire for React devs often. Wild times. #perfNow 052
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 31/10/2025For #PerfNow folks (and other folks who are interested in front-end #webperf)… you should know that @adevnadia.bsky.social has written this amazing resource. www.getwebperf.comgetwebperf.comWeb Performance FundamentalsA Frontend Developer’s Guide to Profile and Optimize React Web Apps 0102
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@adevnadia.bsky.social is not afraid to shout from the stage why she loves SPAs (while acknowledging their drawbacks) and on behalf of all FE devs, I would like to thank her for her bravery 🫡🙏🏻 #perfNow 0101
Reposted by Keerthana KrishnanStuart McMillan @stuart-mcmillan.com · 31/10/2025One of the newest job descriptions "vibe coding cleanup specialist" techcrunch.com/2025/09/14/v... #perfnowtechcrunch.comVibe coding has turned senior devs into ‘AI babysitters,’ but they say it’s worth it | TechCrunchTechCrunch spoke to experienced coders about their time using AI-generated code about what they see as the future of vibe coding. 082
Reposted by Keerthana KrishnanCliff Crocker @cliffcrocker.bsky.social · 31/10/2025@mmocny.com doing an excellent job of visually explaining how interactions are measured between an MPA and a SPA. #perfnow 083
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@programmingart.bsky.social and I are on the same page for a lot of things but I'm still learning from the master on how much drip a Halloween costume should have #perfNow 0152
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@mmocny.com is in the right place because yes, #perfNow is the place which thinks measuring user interaction accurately is suuper cool 😎 040
Reposted by Keerthana KrishnanJoan León @nucliweb.net · 31/10/2025Huge 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 0186
Reposted by Keerthana KrishnanStoyan Stefanov @stoyan.me · 30/10/2025Fellow #perfnow fellows, a reminder that PerfPlanet calendar is coming this December for another edition. And it needs YOU. Please ask if you have any contribution ideas or concerns calendar.perfplanet.com/contribute/calendar.perfplanet.comContributePassionate about a topic? Working on a new tool? Have a technique you want to teach? Research you've done? Tell the web performance community! Send your articles to ssttoo@ymail.com. Please include: ... 22319
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@andydavies.me has the receipts to call out how 1st party scripts (NextJS) usage really mess with performance in a real world example at #perfNow 0101
Reposted by Keerthana KrishnanRiccardo Margiotta @riccardomargiotta.co.uk · 31/10/2025Be aware of "survivor bias" in your metrics. Users having a fast experience will view more pages and have longer sessions. Your RUM data is always inherently biased towards those with fast experiences. @andydavies.me #PerfNow #webperf 063
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 31/10/2025Learn more about Total Blocking Duration (TBD), the experimental new metric that @andydavies.me is pioneering. #PerfNow www.speedcurve.com/blog/long-an...speedcurve.comSpeedCurve | NEW! Monitor Long Animation Frames and get to the bottom of your JavaScript issuesNow you can monitor Long Animation Frames (LoAFs) and fix the third parties and other scripts that are hurting your user experience! 052
Reposted by Keerthana KrishnanRyan Townsend @twnsnd.com · 31/10/2025In my opinion, any SWE writing client-side JavaScript has a responsibility to understand the Event Loop. @jakearchibald.com’s ‘In The Loop’ talk is required watching: www.youtube.com/watch?v=cCOL... (cited by @andydavies.me at #perfnow) 2316
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025"People with faster experiences do more... the web is biased towards people with faster experiences" - @andydavies.me at #perfNow 040
Reposted by Keerthana KrishnanStuart McMillan @stuart-mcmillan.com · 31/10/2025Day 2 at #perfnow I'm going to continue to add notes to my blog through the day stuart-mcmillan.com/blog/webperf...stuart-mcmillan.comNotes from Performance.now 2025 conference | Stuart McMillanMy fifth year at Performance.now conference, the world's best #webperformance conference 092
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 31/10/2025“We are the user’s line of defence” between automated tools that don’t offer accountability. @tkadlec.bsky.social at #PerfNow 162
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 31/10/2025For #PerfNow folks who want to go even deeper on Long Animation Frames, @andydavies.me wrote the definitive guide. www.speedcurve.com/blog/guide-l...speedcurve.comSpeedCurve | The Definitive Guide to Long Animation Frames (LoAF)LoAF lets you identify problem scripts, quantify the impact of third-party scripts, and improve the user experience. Here's everything you need to know to get started. 0135
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025@andydavies.me explaining LoAFs (Long Animation Frames) in the context of a page lifecycle - "Normally atleast 1 before FCP" at #perfNow 020
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 31/10/2025We’re shipping more and more and more JavaScript. And the problem is only going to get worse as most AI-generated web pages are built on JS frameworks. @speedcurve.com performance expert @andydavies.me at #PerfNow 0123
Keerthana Krishnan @keerthanak17.bsky.social · 31/10/2025WOW, @tkadlec.bsky.social totally exposes how lopsided the equation with AI crawlers is right now at #perfNow 091
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025Sharing raw metrics with stakeholders isn’t enough. Instead, share clear problem statements. @ethangardner.com at #PerfNow 061
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025@ethangardner.com shares some harsh real user feedback about slow sites that we can use to show non-performance folks why site speed matters. #PerfNow 031
Reposted by Keerthana KrishnanRiccardo Margiotta @riccardomargiotta.co.uk · 30/10/2025Be the interpreter for your non-technical stakeholders. Milliseconds don't mean much to most people, make the data relatable. "Now they get a smoother experience that's over 50% faster." @ethangardner.com on making performance allies. #PerfNow #webperf 084
Reposted by Keerthana KrishnanSergey Chernyshev @sergeyche.dev · 30/10/2025Glad to announce that my team at @cloudflare.social released a 1.0.0 version of a cross-browser web performance testing agent that supports Chrome, Firefox, Safari and Edge. Thank you to @tkadlec.bsky.social for making it happen and writing most of the code so far! github.com/cloudflare/t...github.comGitHub - cloudflare/telescope: Cross-browser web performance testing agentCross-browser web performance testing agent. Contribute to cloudflare/telescope development by creating an account on GitHub. 03312
Reposted by Keerthana Krishnansvenning🌲 @svenning.io · 30/10/2025You've heard about colouring books... But have you heard about a ˗ˏˋ CSS colouring book!? ˎˊ˗ Introducing the @nordcraft.com CSS colouring book today! Get out your CSS pencils and get colouring! 😃 nordcraft.com/coloring-booknordcraft.comNordcraft Coloring BookJust clone the template and start coloring 🎨🖌️ 1207
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025Loving @ethangardner.com’s talk about making #webperf allies! Totally agree that competitive benchmarking can get marketing folks excited about performance Fun fact: you can do that with @speedcurve.com! #PerfNow support.speedcurve.com/docs/competi...support.speedcurve.comHow to Benchmark Your Site Speed Against CompetitorsKnowing which of your competitors are faster than you is a great way to get web performance buy-in throughout your organization. 073
Keerthana Krishnan @keerthanak17.bsky.social · 30/10/2025@ethangardner.com is an absolute riot while giving sage advice at #perfNow 030
Keerthana Krishnan @keerthanak17.bsky.social · 30/10/2025If Umar Hansa's talk was an album, I would describe it as all hits no skips because my god, it's so packed to the brim with little tips and tricks to improve the way you diagnose and deal with perf problems. I can't stop taking screenshots! #perfNowmedia.tenor.coma group of men standing next to each other with the words " can 't stop won 't stop " on the bottomALT: a group of men standing next to each other with the words " can 't stop won 't stop " on the bottom 081
Reposted by Keerthana KrishnanRiccardo Margiotta @riccardomargiotta.co.uk · 30/10/2025The #webperf industry has settled on P75 as our benchmark. P75 isn't very ambitious. "It's fine for 25% of our customers to have a bad experience, we don't mind." Why not aim for p95? @csswizardry.com #PerfNow 0102
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025And last (but definitely not least) here’s @cliffcrocker.bsky.social’s super-interesting analysis of INP and its correlation with UX and business metrics. #PerfNow www.speedcurve.com/blog/INP-use...speedcurve.comSpeedCurve | Does Interaction to Next Paint actually correlate to user behavior?If you make INP faster, will it actually improve the user experience... and help your business? Here's our analysis. 0103
Reposted by Keerthana KrishnanRyan Townsend @twnsnd.com · 30/10/2025“What happens when you want to center a div in Chrome?” — @michael-hladky.bsky.social at #perfnow This would make a great interview question that would give a variety of different answers. #webperf 1203
Reposted by Keerthana KrishnanVinai Kopp @vinai.bsky.social · 30/10/2025@marcysutton.com “Go forth and improve access” presentation has a great tool list #perfnow 0102
Reposted by Keerthana KrishnanRik Schennink @rikschennink.com · 30/10/2025Respect user preferences. Years ago I published conditionerjs.com to help you conditionally load JavaScript modules based on the current user context and preferences. Great DX if you’re into sprinkling a little bit of JS on top of your pages. #perfnow 072
Keerthana Krishnan @keerthanak17.bsky.social · 30/10/2025"If you didn't have a dark mode, you didn't get my business. And nursing moms shop a lot!" - @inesakrap.bsky.social being so real at #perfNow 061
Keerthana Krishnan @keerthanak17.bsky.social · 30/10/2025One more reason to work on web perf! 😎 @inesakrap.bsky.social at #perfNowmedia.tenor.coma man in a pink jacket is laughing and asking if he is better than everyone .ALT: a man in a pink jacket is laughing and asking if he is better than everyone . 030
Keerthana Krishnan @keerthanak17.bsky.social · 30/10/2025TIL - It's better for the environment to use less JS, as if I needed one more reason 😬 @inesakrap.bsky.social at #perfNow 070
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025“As performance-minded technologists, you are in a position to do something about accessibility.” — @marcysutton.com at #PerfNow marcysutton.com/accessibilit...marcysutton.comAccessibility and Performance | MarcySutton.comMusings about frontend code, accessibility, web development consulting, and life. 0112
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025Slides from my @perfnow.nl talk — How Fast Is Fast Enough? — are up! If you’re at #PerfNow (or even if you’re not) I’d love to talk about creating a delightful experience for your users. speakerdeck.com/tammyeverts/...speakerdeck.comHow Fast Is Fast Enough? [PerfNow 2025]It sounds like a simple question, but if you've been working in web performance long enough, you know the answer is far from straightforward. In this ke… 0116
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025Sharing a few of the sources I cited during my #PerfNow talk, I’ll start with this one… Here’s a deeper dive into how to create correlation charts that help you see the relationship between performance metrics and business/engagement metrics. www.speedcurve.com/blog/site-sp...speedcurve.comSpeedCurve | Correlation charts: Connect the dots between site speed and business successIf you could measure the impact of site speed on your business, how valuable would that be for you? 062
Reposted by Keerthana KrishnanTammy Everts 🍁 @tammyeverts.com · 30/10/2025Another source from my #PerfNow talk… Here’s why you need to know the performance plateau for your site. www.speedcurve.com/blog/web-per...speedcurve.comSpeedCurve | Why you need to know your site's performance plateau (and how to find it)Have you ever wondered why your site got faster, but your business and user engagement metrics didn't change? Here's why. 0105
