#perfmatters — Public Fediverse posts

CVE Alert: CVE-2026-4350 - perfmatters - Perfmatters - https://www.redpacketsecurity.com/cve-alert-cve-2026-4350-perfmatters-perfmatters/

#OSINT #ThreatIntel #CyberSecurity #cve-2026-4350 #perfmatters #

@slightlyoff As promised:

https://techblog.wikimedia.org/2019/03/27/autonomous-systems-performance-report/

https://performance.wikimedia.org/asreport/

Raw TSV-data is linked there and goes back to 2019.

#browserstats #webperf #perfmatters #asreport

New Blog post by me! Pre-compressing HTML to Brotli 11 using the #11ty build pipeline and serving via Cloudflare pages & a Cloudflare Worker #eleventy #webperf #perfmatters #cloudflare
https://nooshu.com/blog/2026/02/21/precompressed-html-at-the-edge-eleventy-meets-cloudflare-workers/

Fast by Default https://calendar.perfplanet.com/2025/fast-by-default/

(I thought I recognised the author! Den gave me and Dean Hume our first attempt at practicing a Velocity Conf session on an AQA meetup crowd, way back in the 2010s)

#perfmatters #sitespeed

Traffic Modeling Using Machine Learning https://calendar.perfplanet.com/2025/traffic-modeling-using-machine-learning/

#sitepseed #perfmatters

Exploring Large HTML Documents On The Web https://calendar.perfplanet.com/2025/exploring-large-html-documents-on-the-web/

#sitespeed #perfmatters

Vettig analys av hastighet på en befintlig webbplats börjar med RUM-data från ditt webbanalysverktyg och kompletteras med syntetiska tester.

Här kommer ett konkret exempel som börjar med @Matomo och via Webperf Core + Lighthouse ger dig den önskade mixen av analysmetoder.

#Matomo #Webperf #RUM #PerfMatters

https://webperf.se/articles/rumdata-matomo/?mtm_campaign=webperf-official&mtm_kwd=matomo-rum&mtm_source=masto

If anyone is off to Amsterdam tomorrow for Performance.now(), hopefully I see you there! #webperf #perfmatters

“Browsers are evolving to reward simplicity and resilience. They’re building for the kind of web we should have been embracing all along.”

https://www.jonoalderson.com/conjecture/its-time-for-modern-css-to-kill-the-spa/

#CSS #JS #SPA #JavaScript #WebDev #PerfMatters

Developing the twom database for Cyrus IMAP,
by Bron Gondwana at Fastmail (@fastmail).

"""
TIL: fcntl isn’t fair. Releasing the lock didn’t magically let a waiting writer proceed, the same process would often pick up the lock again without giving another process a chance. On busy files, writers could entirely starve.
"""

https://www.fastmail.com/blog/introducing-twom/

#perfmatters #webperf #fastmail #imap

Woah, they've really out done themselves. The attention to detail. Perfection!

Slow as it ever was.
Slow as it, ever, was?
Slow as it, *ever* was!
Slow as it ever was...

It's got only 900 views after 2y. Let's give 'em some love!

https://www.youtube.com/watch?v=EjGWFVMKgr0

#perfmatters #webperf
#TalkingHeads #OnceInALifetime #DavidByrne #OnceInALoadTest

My latest post on the Performance Advent Calendar is now live: https://calendar.perfplanet.com/2024/when-users-interact/

This one talks about the elephant in the rüm of user interactions.

#perfmatters #webperf #rum #ux #cwv #inp

I'm a big fan of Yellow Lab Tools; they bring a different perspective to visualising performance to other tools.

🔗 Simple Web Performance Mentoring https://calendar.perfplanet.com/2024/simple-web-performance-mentoring/

#webperf #perfmatters

🔗 Putting Performance in Relatable Terms https://calendar.perfplanet.com/2024/putting-performance-in-relatable-terms/

#webperf #perfmatters

An interesting look at the Speculation Rules API in comparison to resource hints.

🔗 The Evolution of Instant Web: What It Means for Performance Tooling https://calendar.perfplanet.com/2024/the-evolution-of-instant-web-what-it-means-for-performance-tooling/

#webperf #perfmatters

A web performance meta article! And a great new acronym:

🔗 SUX sells, but how to sell SUX? https://calendar.perfplanet.com/2024/sux-sells-but-how-to-sell-sux/

#webperf #perfmatters

More performance deep dives from Perf Planet:

🔗 How does the #React Compiler perform on real code https://calendar.perfplanet.com/2024/how-does-the-react-compiler-perform-on-real-code/

#webperf #perfmatters

🔗 What a Web Performance Engineer Needs to Know About Cloud Cost Savings https://calendar.perfplanet.com/2024/what-a-web-performance-engineer-needs-to-know-about-cloud-cost-savings/

#webperf #perfmatters #costmatters

Might be more suited to an April Fools article, but still fun!

🔗 How does Web Performance sound? https://calendar.perfplanet.com/2024/how-does-web-performance-sound/

#perfmatters #webperf

If mastering Google PageSpeed is your goal and you use WordPress, you have to have https://perfmatters.io/ After six hours of plugins that were supposed to work and manual fixes from around the Web, I tried Perfmatters. It consolidated CSS, deferred javascript, and removed the WordPress bloat. Highly recommended. #perfmatters #googlepagespeed

⚡ Do you know why people can only perceive changes of more than 20%? How does this affect web performance work?

Learn about the psychology of speed: how its perceived and how to make it feel as fast as possible.

#webperf #perfmatters

https://calibreapp.com/blog/perceived-performance

⚡ Poor TTFB indicates that your servers aren’t responding quickly enough, which can cause cascading performance issues for the entire page-loading process.

Here’s how to ensure a good TTFB measurement:

🔹 upgrade your hosting
🔹 use a CDN
🔹 reduce DNS lookup time
🔹 always default to server-rendered HTML

#webperf #perfmatters

https://calibreapp.com/blog/time-to-first-byte

⚡ Slow websites don’t become fast because of individual, one-off tactics. We need constant efforts in keeping optimal web performance.

Here’s our take on web performance sustainability.

#webperf #perfmatters

https://calibreapp.com/blog/improve-core-web-vitals

⚡ Image optimisation is a relatively easy fix with potentially high rewards. Many tools can be used by anyone on your team, without prior knowledge.

We compiled:

🔹 Image compressors
🔹 Image formats
🔹 Content delivery networks characteristics
🔹 Compression algorithms
🔹 Placeholder techniques

#webperf #perfmatters

https://calibreapp.com/blog/image-optimisation-guide

⚡ You don't have to be a developer or an expert to start thinking about web performance. We prepared five begginer-friendly tips on how to get started.

#webperf #perfmatters

https://calibreapp.com/blog/beginner-speed-optimisations

An exception portfolio project: announcing http://KleiderOrdnung.Berlin, a beautiful website for Tina Steinke's sustainable fashion consulting services
https://dev.to/ingosteinke/a-beautiful-portfolio-website-for-a-sustainable-fashion-consultant-3807
#showdev #webdev #perfmatters #a11y #css #fashion #slowfashion #berlin #wordpressdeveloper #webdevelopment

An exception portfolio project: announcing http://KleiderOrdnung.Berlin, a beautiful website for Tina Steinke's sustainable fashion consulting services
https://dev.to/ingosteinke/a-beautiful-portfolio-website-for-a-sustainable-fashion-consultant-3807
#showdev #webdev #perfmatters #a11y #css #fashion #slowfashion #berlin #wordpressdeveloper #webdevelopment

Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope

Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope

Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope

Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope

Our goal is to lower the barrier to performance profiling. The WikimediaDebug browser extension for Firefox and Chromium, can now profile the backend MediaWiki PHP process, and turn it into an interactive flamegraph, powered by Excimer and Speedscope.

What are flamegraphs, when do you need it, and how does it work?

https://techblog.wikimedia.org/2023/06/08/flame-graphs-arrive-in-wikimediadebug/

#WebPerf #profiling #flamegraph #PerfMatters #PHP #MediaWiki #Excimer #Speedscope

Guess who's number 1 on the test-runners Speedlify, for the third year in a row!

https://www.speedlify.dev/test-runners/

https://qunitjs.com

#qunit #perfmatters #tdd #crossbrowsertesting