Toots for screenspan@mastodon.green account

Written by screenspan on 2024-12-13 at 10:07

📈 Real User Monitoring (RUM) is crucial for identifying issues on websites and tracking regressions. But the challenge multiplies when monitoring hundreds or thousands of sites. I got to share insights into our collaborative efforts in Amsterdam in Nov.: https://www.youtube.com/watch?v=XBsvaQ5hpI4&list=PLjnstNlepBvOm686RUk2yWaX8ELBwJskS&index=7

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Written by screenspan on 2024-12-03 at 11:07

As a #webperf engineer I often have to look at “waterfall charts” to see when network requests occur to spot bottlenecks. I wondered what they might SOUND like, so made a little tool to listen to them.

https://calendar.perfplanet.com/2024/how-does-web-performance-sound/

https://screenspan.net/soundtrace

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Written by screenspan on 2024-11-21 at 10:54

Very excited about @stubbornella asking about whether we need Core Web Vitals in Safari for measuring #webperf, so I wrote down some opinions and thoughts.

https://screenspan.net/blog/why-safari-needs-core-web-vitals/

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Written by screenspan on 2024-11-15 at 11:20

Optimize font loading on your site by 1) using system fonts, 2) removing unnecessary fonts and languages; if loading web fonts 3) self-host, make sure they’re WOFF2 and cache them, 4) make sure you set fallbacks (my tool https://screenspan.net/fallback/ can help). @mandymichael #perfnow

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Written by screenspan on 2024-11-15 at 09:33

Super cool new features and improvements in Chrome 131 DevTools to help debug performance:

https://developer.chrome.com/blog/new-in-devtools-131/ @jackf #perfnow

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Written by screenspan on 2024-11-14 at 17:00

70% of jobs to be done on desktop done with a browser – but on mobile, only 8% of time spent is in a browser. The rest is non-web platforms, which are not open, interoperable, gatekeeper-free. That platform competition leads to more inequality in accessing digital information. @slightlyoff https://infrequently.org/2024/10/platforms-are-competitions/ #perfnow

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Written by screenspan on 2024-11-14 at 11:58

Super nice perf tools by @paulcalvano : https://paulcalvano.com/tools/ #perfnow

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Written by screenspan on 2024-11-14 at 09:42

[#]perfnow @csswizardry excellent cautionary tale about using synthetic testing to monitor websites (which you shouldn’t do; RUM is for monitoring): he saw a metric improve, not due to an optimization, but due to the testing agent getting updated.

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Written by screenspan on 2024-11-14 at 08:58

At #perfnow, @tammy makes a good point: 1 in 5 web users globally use Safari — but that browser doesn’t even support the metrics that we use to measure performance. So there’s a lot we don’t really know.

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Written by screenspan on 2024-09-12 at 11:24

I didn’t have a phone stand at hand, so I made one using an egg carton. #upcycling

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Written by screenspan on 2024-09-09 at 10:02

My colleague Andrea Verlicchi just posted a new blog post on how to improve #corewebvitals Interaction to Next Paint (INP).

He points out several common bottlenecks that we come across on customer sites:

🍾 Synchronously sending analytics beacons upon interaction

🍾 Inducing style recalculations by applying style changes to the document body

🍾 Executing too much UI-related JavaScript at once — even for elements that are not even within the viewport

https://www.speedkit.com/blog/enhancing-web-responsiveness-how-to-debug-and-avoid-slow-interactions

[#]webperf

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