#webperf
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grimicorn.bsky.social
One unload listener or a no-store header can quietly opt your pages out of bfcache and kill the instant back button. How to find the blockers:

🔗 danholloran.me/posts/bfcach...

#webdev #webperf
danholloran.me
November 1, 2026 at 5:14 PM
webperfreport.bsky.social
Chrome now measures soft navigations in the Chrome UX Report.

Once they’re counted, the share of app-heavy sites with good loading scores on Android goes from 26% to 87%.

Will your web app’s scores change? 👇

#WebPerf #CrUX
November 2, 2026 at 7:34 PM
kerdchatporno.bsky.social
WordPress sites have higher bounce rates and fewer conversions. The perfmatters plugin was created by webperf geeks to speed up your site!

Demo: https://perfmatters.io/
https://workupload.com/file/7cJ3FeRyADt
https://vikingfile.com/f/ey5ezhuqCx
https://uploadrar.com/r3ykzyo9rc21
https://w
Perfmatters v2.6.7 – Lightweight Performance Plugin » Kerdchat
WordPress sites have higher bounce rates and fewer conversions. The perfmatters plugin was created by webperf geeks to speed up your site! Demo: https://perfmatters.io/ https://workupload.com/file/7cJ3FeRyADt https://vikingfile.com/f/ey5ezhuqCx https://uploadrar.com/r3ykzyo9rc21 https://www.upload.ee/files/19625089/perfmatters-267.rar.html https://send.now/d/1nYf2 https://pixeldrain.com/u/bpYfLggu https://mixdrop.top/f/9wn16mwxh3361l0 https://www.mirrored.to/files/5BC02D1E/perfmatters-267.rar_links https://megaup.net/031f4e2e7815c9352fb983a644882323/perfmatters-267.rar https://hxfile.co/rj97ggaba5qk https://gofile.io/d/MEMCFo https://cloudfam.io/794cc296d30d https://bowfile.com/2Pq3t https://1fichier.com/?kr6h3nhjaludmb8obicy
www.kerdchat.com
November 3, 2026 at 4:38 PM
webperfreport.bsky.social
⚡Featured posts this week:
✨ Design Systems Should Be Fast by Default: @denodell.bsky.social
✨ Scroll-Driven Animations Baseline: @bram.us
✨ How to Convince People to Invest in a11y: @stephaniewalter.bsky.social
✨ The Future of Google Chrome: Jacob Bank
🙏 Special thanks to the authors!
#webperf
WebPerformance Report Perf Links illustration featuring a curated selection of web technology articles. The design includes the official WPR logo, blue and orange branding, a cheerful emoji, and the tagline “Reports. Decisions. Results.”
November 1, 2026 at 1:43 PM
webperfreport.bsky.social
🎉 WebPerformance Report Week #44 is out! ✅

Five dimensions. One inbox. ✨

⚡ Performance
🛡️ Security
♿ Accessibility
📊 Analytics
🔎 SEO

Get automated reports delivered to your inbox!

👉 webperformancereport.com#Catalog

#webperf
WebPerformance Report illustration showing five automated web reports (Performance, Security, Accessibility, Analytics, and SEO) emerging from an envelope labeled “Your Inbox.” The design features the WPR logo, blue and orange branding, and the message “Your Weekly Web Reports Have Arrived!” with the tagline “Reports. Decisions. Results.”
November 1, 2026 at 1:11 PM
inautilo.bsky.social
#Development #Releases
New to the web platform (October 2026) · Baseline scroll-driven animations, wider JPEG XL support, and more ilo.im/16hkgw by Rachel Andrew

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#Browser #Chrome #Firefox #Safari #WebPlatform #WebPerf #WebDev #Frontend #HTML #CSS #JavaScript
New to the web platform in October  |  Blog  |  web.dev
Discover some of the interesting features that have landed in stable and beta web browsers during October 2026.
ilo.im
November 2, 2026 at 3:16 PM
dreamfuturestech.bsky.social
When a contractor’s site takes 15 seconds to load, most visitors quit before they see the phone number. That means lost calls and lost work. A fast, simple page is the cheapest way to keep the phone ringing. #webperf
October 30, 2026 at 7:45 PM
requestmetrics.com
Polymarket's CSP allowed every request that drained its users. The URL never changed, only the bytes.

Bundle our agent from npm or pin it with SRI.

requestmetrics.com/web-performa...

#WebPerf #WebSecurity
How We Protect Our JavaScript Agent, and How to Host It Yourself
Attackers hijacked DebugBear's script to drain Polymarket wallets on October 29. Here is how we protect the Request Metrics agent, and how to host it you...
requestmetrics.com
November 3, 2026 at 12:48 PM
commercegeek.com
Where do well-known stores keep their content, and what sits in front of them?

For content (CMS): Sanity is on 28 of the 698 stores we track.
For hosting and CDN: Cloudflare is on 562 of the 698 stores we track.

#Headless #WebPerf

commercegeek.com/tools
October 30, 2026 at 5:02 PM
inautilo.bsky.social
#Development #Comparisons
The AI cost of JavaScript frameworks · Which frameworks are better for agents? ilo.im/16hf71 by Nolan Lawson

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#VibeCoding #AI #AiAgents #ClaudeCode #MCP #Cost #JavaScript #Frameworks #WebPerf #WebDev #Frontend
The AI cost of JavaScript frameworks
One of my pet peeves with the web development community is that so many of the decisions we make are vibes-based. Frameworks are “blazing fast,” tools will…
ilo.im
October 29, 2026 at 1:06 AM
webperfreport.bsky.social
Small feature. Big help. 💡

You asked for the numbers behind the colored dots, so we added a Core Web Vitals tooltip to your board.

Hover the dots to see the exact LCP, CLS and TBT, and spot trends in seconds. ⚡

👉 webperformancereport.com

#WebPerf #CoreWebVitals
October 27, 2026 at 7:30 PM
chriserod.bsky.social
Positive rootMargin gives lead time; thresholds tie the callback to a stable crossing; microtask debounce + size check prevents jitter and duplicate loads. Tune px vs % for your layout. #webperf

https://chriseugenerodriguez.com/blog/intersectionobserver-preload-without-jitter
AI-generated editorial illustration of a viewport edge with a content card nearing visibility and a subtle prefetch boundary ahead of it.
October 29, 2026 at 7:50 PM
inautilo.bsky.social
#Design #Mindsets
Fast is a design decision · Building is cheap now, but waiting never was ilo.im/16h9jw by Shan Hannadige

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#PerformanceBudget #AI #AiAgents #ProductDesign #UxDesign #UiDesign #WebDesign #Development #WebPerf #WebDev #Frontend
Fast is a design decision
Building a site has never been cheaper, but making it fast still costs attention and your user's resources.
ilo.im
October 26, 2026 at 11:06 PM
vanderhoop.bsky.social
The NFL loves to throw flags on the Packers, so let me return the favor.

NFL.com lazy loads its LCP image. Delay of game, 5 yards.

That image has 13x more pixels than the box it sits in. Unnecessary roughness, 15 yards.

Repost and *maybe* they fix the obvious stuff. See comments below

#webperf
October 26, 2026 at 2:10 AM
opsmatters.com
The latest update for #OctoPerf includes "OctoPerf 18: Test as Code With K6, and Core Web Vitals for #Playwright" and "Migrating Gatling Simulations to OctoPerf With an #AI Agent".

#Testing #webperf #loadtesting https://opsmtrs.com/3CN5SmN
OctoPerf
OctoPerf is the first full Web user experience in the load testing tool market. Design, set your load policy, execute your load test, and analyze it directly from a web browser.
opsmtrs.com
October 27, 2026 at 2:45 AM
webperfreport.bsky.social
Google Chrome just retired the unload event.

For years it ran a page’s goodbye code. But it often never ran on phones, and it blocked the instant Back button.

Since Chrome 155, it no longer runs by default. Is your site still using it?

Sources in the comments. 👇

#WebPerf
October 24, 2026 at 3:46 PM
webperfreport.bsky.social
⚡Featured posts this week:
✨ Todays PHP Security Release: @thephpf.bsky.social
✨ Shopify Checkout Hijack Attack: @romanzipp.com
✨ AI, make the website good: @zachleat.com
✨ Whats new in the W3C WDS: @studio24.net
🙏 Special thanks to the authors!
#webperf
WebPerformance Report Perf Links illustration featuring a curated selection of web technology articles. The design includes the official WPR logo, blue and orange branding, a cheerful emoji, and the tagline “Reports. Decisions. Results.”
October 25, 2026 at 2:11 PM
webperfreport.bsky.social
🎉 WebPerformance Report Week #43 is out! ✅

Five dimensions. One inbox. ✨

⚡ Performance
🛡️ Security
♿ Accessibility
📊 Analytics
🔎 SEO

Get automated reports delivered to your inbox!

👉 webperformancereport.com#Catalog

#webperf
WebPerformance Report illustration showing five automated web reports (Performance, Security, Accessibility, Analytics, and SEO) emerging from an envelope labeled “Your Inbox.” The design features the WPR logo, blue and orange branding, and the message “Your Weekly Web Reports Have Arrived!” with the tagline “Reports. Decisions. Results.”
October 25, 2026 at 1:38 PM
engagezing.bsky.social
Accessibility is the ultimate SEO hack. 🦋 By building ADA-compliant websites, you improve site structure and speed, making both users and search engines happy. Here is how to do it tactically: engagezing.com #WebPerf #Accessibility
October 22, 2026 at 2:34 AM
techstyle-co.bsky.social
Rendering every image size at upload turned 5,000 originals into 30,000 files. Rutba Media FileServer stores only the masters and makes each size on request. From a cold start it answers over 150,000 cached files in under a second.

https://tech-style.co/product-media-fileserver

#WebPerf
Rutba Media FileServer: store masters only, resize on request
Rendering every image size at upload turned 5,000 originals into 30,000 files, most of them never requested.
www.youtube.com
October 23, 2026 at 10:21 AM
commercegeek.com
The quickest app-free win is the hero image: never lazy-load it, and give it fetchpriority high. In our sample, 72% of Liquid theme stores pass all three Core Web Vitals, so a well-kept theme is a solid starting point.

#Shopify #WebPerf

commercegeek.com/s/mkuqxib
Speed up Shopify without apps: a practical guide
Make a Shopify store faster without adding apps: fix the hero image, keep the theme lean, handle fonts and scripts, then check the result with Core Web Vitals.
commercegeek.com
October 22, 2026 at 4:53 PM
webperfreport.bsky.social
Something greener is coming to WebPerformance Report. 🌱

We've wanted to bring sustainability reporting to WPR for quite some time.

Using data and tools from The Green Web Foundation, we're making it happen! 🌍

More soon! 👀

#WebPerf #Sustainability
Coming soon: WebPerformance Report's new Website Carbon Footprint Report. A preview of sustainability metrics, estimated CO₂ emissions, carbon ratings, website efficiency, and green hosting information, using data and tools from The Green Web Foundation and CO2.js.
October 21, 2026 at 6:40 PM
web-standards.dev
Why WebMCP matters. @yoav.ws calls WebMCP web performance for AI agents: sites register JS tools that agents call instead of clicking around, so co-browsing gets faster and cheaper while users stay in control. #ai #api

blog.yoav.ws/posts/w...
Title “Why WebMCP matters”, subtitle “AKA WebMCP is Agentic WebPerf”, and author’s photo on a technical drawing of interlocking gears.
October 20, 2026 at 10:00 AM
sergeyche.dev
Awesome write-up! If you’ve been dealing with fonts in your #webperf work and have seen it all, this is something new for you!
paulcalvano.bsky.social Paul Calvano @paulcalvano.bsky.social · 15d
During last week's @nywebperf.com Meet4Speed session, we analyzed the performance of an eCommerce website and found a very peculiar font bug that resulted in 3 formats of the same font being loaded. paulcalvano.com/2026-10-18-i...
October 19, 2026 at 12:39 PM
nucliweb.net
Totally agree, and you can use the CLI version webperf-snippets.net/CLI

FYI, I have it on the roadmap to publish a GitHub Action
WebPerf Snippets CLI
Run curated WebPerf Snippets headlessly via Playwright. Diagnose Core Web Vitals beyond what Lighthouse exposes and gate CI on real performance budgets.
webperf-snippets.net
October 19, 2026 at 11:24 AM