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Grilled Cheese is a product of Village Compute

Version devBuilt at: 2026-10-11 02:37:10 EDT

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@josephscott.bsky.socialSep 23, 2026, 3:14 PM

One more đź‘Ť - the progressive rendering that I've seen from both AVIF and JXL look good, with those widely supported I'd ditch any other color blur pre-fill approach. #webperf

@lionel-peramo.comSep 22, 2026, 8:00 AM

You use Promises for every async task.

Tomorrow, you might use scheduler.postTask instead.

They handle tasks in very different ways.

Here is how they change web performance.

#JavaScript #WebPerf #WebDev

1/5

An educational graphic titled 'Scheduler API' comparing task cancellation with a forest background. It shows how standard Promises require manual event listeners (addEventListener) on AbortSignal to reject a task, whereas the modern Scheduler API natively handles the AbortSignal through its options object in scheduler.postTask. Footer shows Lionel PĂ©ramo's profile.
@glitchreplay.bsky.socialSep 21, 2026, 4:55 PM

If your site feels fast in DevTools but ranks poorly in Google, you're likely seeing the gap between lab simulations and actual device thermal throttling. #glitchreplay #errortracking #sessionreplay #bugmonitoring #webperf #rum 2/2

@nucliweb.netSep 20, 2026, 2:04 PM

The case against JPEG XL

Investigating JPEG XL's place as a Web image codec, by @giannirosato.com, via @webperfreport.bsky.social

giannirosato.com/blog/post/ca...

#JPEGXL #JXL #ImagePerf #WebPerf

A dark-themed line chart titled “SSIMULACRA2,” showing BD-Rate (%) versus encoding speed in milliseconds for several image codecs. Colored lines compare codecs including AOM, JPEG XL, aperture-alpha, Iris-WebP, libjxl, SVT-AV1, and libwebp, with labeled data points. Most curves show higher BD-Rate at slower speeds, while some reach negative BD-Rate at faster speeds.
@webperfreport.bsky.socialSep 20, 2026, 12:25 PM

⚡Featured posts this week:
✨ New ad metrics in CrUX: @alextcone.bsky.social
✨ The case against JPEG XL: @giannirosato.com
✨ Why Spotify Is Not Using Bayesian A/B Testing: Mattias Frånberg, Mårten Schultzberg
✨ International SEO: @polemicdigital.com
🙏 Special thanks to the authors!
#webperf

WebPerformance Report performance email preview highlighting optimization scores, Perf Links, and Core Web Vitals metrics on a colorful gradient background.
@webperfreport.bsky.socialSep 20, 2026, 12:01 PM

🎉 WebPerformance Report Week #38 is out! ✅

Join our growing community:
⚡ Performance Report
🛡️ Security Report
♿ Accessibility Report
đź“Š Analytic Report
🔎 SEO Report

Explore our report catalog 👉 webperformancereport.com

#webperf #websecurity #a11y #analytics #seo #ai

Five WebPerformance Report email examples showing web performance, accessibility, security, analytics and SEO reports on a colorful gradient background.
@lionel-peramo.comSep 16, 2026, 8:01 PM

Can you speed up your app at server startup?

PHP preloading loads files into memory in advance.

This helps your server answer requests much faster.

#PHP #WebPerf #DevOps

1/5

PHP code demonstrating how to preload classes and functions in PHP 7.4. The code shows three calls to the `opcache_compile_file` function, with explanatory comments. Two of the calls preload PHP class files, and the last one preloads a file of functions.
@inautilo.bsky.socialSep 15, 2026, 7:10 AM

#Design #Examples
The invisible side of design engineering · “A lot of what makes a great experience is invisible.” ilo.im/16g52q by Jakub Krehel

_____
#DesignEngineers #WebPerf #Accessibility #InvisibleDesign #ProductDesign #UiDesign #WebDesign #Development #WebDev #Frontend

@etechinvest.bsky.socialSep 14, 2026, 6:30 PM

Quick performance checklist for web devs — key metrics and fixes in the image. #webperf #webdev

imageimageimage
@lionel-peramo.comSep 14, 2026, 8:00 AM

Is your website slow?

The PerformanceObserver API helps you find out why.

Here is how it works.

#WebDev #WebPerf #JavaScript

1/5

Example of JavaScript code using the PerformanceObserver API to observe resources taking more than 500ms to load.
@webperfreport.bsky.socialSep 13, 2026, 10:57 AM

⚡Featured posts this week:
✨ Resource Age and Its Impact on Cacheability: @paulcalvano.bsky.social
✨ Increased INP impact from Meta Pixel: @erwinhofman.bsky.social
✨ Native is now the future of mobile: Mustafa Ali
✨ UNO Is Underrated: @csswizardry.com
🙏 Special thanks to the authors
#webperf

WebPerformance Report security report highlighting the scan summary, key results, scoring details, and recommended web performance resources.
@webperfreport.bsky.socialSep 13, 2026, 10:30 AM

🎉WebPerformance Report Week #37 is out!✅
⚡Performance Report: webperformancereport.com
🛡️Security Report: webperformancereport.com/httpo/
♿A11y Report: webperformancereport.com/wave/
đź“ŠAnalytic Report: webperformancereport.com/ga4/
🔎 SEO Report: Coming Soon
#webperf #websecurity #a11y #analytics #seo

Five WebPerformance Report email examples showing web performance, accessibility, security, analytics and SEO reports on a colorful gradient background.
@webperfreport.bsky.socialSep 12, 2026, 3:53 PM

🔥 We’re ready for tomorrow’s Security Report delivery.

CSP Analysis section is back in WebPerformance Report.

You’re still in time to receive your Security Report tomorrow.

👉 webperformancereport.com/httpo/

Spread the word! 🙏

#WebPerf #Security #CyberSecurity #WebSecurity

@sia.codesSep 9, 2026, 2:18 PM

August Core Web Vitals data is now live on Theme Vitals for Shopify themes! See how fast your theme is...

#webperf #Shopify

themevitals.com/newsletter/2...

@opsmatters.comSep 8, 2026, 4:50 AM

The latest update for #OctoPerf includes "Migrating Your BlazeMeter Tests With an #AI Agent" and "Migrating a LoadRunner Script to OctoPerf With an AI Agent".

#Testing #webperf #loadtesting https://opsmtrs.com/3CN5SmN

@nucliweb.netSep 7, 2026, 10:17 AM

P75 is green: LCP 1.58s, INP 176ms, CLS 0.01. P90: LCP 2.68s, INP 352ms, CLS 0.17. 15% of visits get a noticeably worse experience.

Product Performance doesn't end once you pass CrUX: if P75 is good, work on P90.

#WebPerf #CoreWebVitals #RUM #ProductPerformance

DebugBear RUM dashboard showing Core Web Vitals at the P75 percentile: Largest Contentful Paint 1.58s, Interaction to Next Paint 176ms, and Cumulative Layout Shift 0.01, all flagged green on the score bar.DebugBear RUM dashboard showing Core Web Vitals at the P90 percentile: Largest Contentful Paint 2.68s, Interaction to Next Paint 352ms, and Cumulative Layout Shift 0.17, all flagged orange or red on the score bar.
@inautilo.bsky.socialSep 7, 2026, 8:18 AM

#Development #Pitfalls
Resource age and its impact on cacheability · The caching mistake slowing millions of websites ilo.im/16fwyb by Paul Calvano

_____
#Caching #HttpHeaders #Content #Browser #Server #CDN #WebPerf #DevOps #WebDev #Backend

@alvaromartincrespo.bsky.socialSep 6, 2026, 6:08 PM

Congrats on the 48% size cut! Curious—did you switch to CSS variables or purge unused styles for the 42% CSS reduction? Also, what ARIA patterns did you add for the new mobile card UI? #webperf

@webperfreport.bsky.socialSep 6, 2026, 12:58 PM

⚡Featured posts this week:
✨ Submit your proposals for Interop 2027: @rachelandrew.co.uk
✨ Reading a performance profile: @nucliweb.net
✨ HTML over WebSockets: @androsfenollosa.bsky.social
✨ Intro to Web UX and Speed Optimization: @sergeyche.dev
🙏 Special thanks to the authors!
#webperf

WebPerformance Report performance email preview highlighting optimization scores, Perf Links, and Core Web Vitals metrics on a colorful gradient background.
@webperfreport.bsky.socialSep 6, 2026, 12:13 PM

🎉WebPerformance Report Week #36 !✅
⚡Performance Report: webperformancereport.com
🛡️Security Report: webperformancereport.com/httpo/
♿A11y Report: webperformancereport.com/wave/
đź“ŠAnalytic Report: webperformancereport.com/ga4/
🔎 SEO Report: Coming Soon
#webperf #websecurity #a11y #analytics #seo #ai

Five WebPerformance Report email examples showing web performance, accessibility, security, analytics and SEO reports on a colorful gradient background.
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