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Posts by Joseph Scott

Utah Jazz ice cream

Utah Jazz ice cream

I noticed this #utah #jazz ice cream at the store the other day www.facebook.com/FarrsIceCrea... - given how bad the Jazz were this year I half expect this to have a very bitter taste #nba

17 hours ago 1 0 0 0
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Introducing Waterfall Tools - Patrick Meenan's Blog I’ve been wanting to build a 100% client-based waterfall tool for a long time. Something with a much more modern rendering engine and UI than WebPageTest’s s...

That project AI was helping me with that I was so excited about a while back? It's finally ready enough for some public exposure:

I bring you "Waterfall Tools": blog.patrickmeenan.com/2026/04/12/i...

1 week ago 23 8 4 0

I really enjoyed watching Project Hail Mary - overall positive message about our ability to do incredibly hard things when we work together and sacrifice for one another.

1 week ago 1 0 0 0

My 16 year old after seeing the 1971 Willy Wonka movie for the first time - "why did they ever remake this, Gene Wilder was perfect" - no argument from me :)

2 weeks ago 2 0 0 0

I get a surprising amount of satisfaction from deleting dead code

2 weeks ago 1 0 0 0
When All You Can Do Is All or Nothing, Do Nothing – CSS Wizardry If your design system can only apply `loading=lazy` or `fetchpriority=high` blindly, it may be safer not to apply them at all.

🚫 When All You Can Do Is All or Nothing, Do Nothing

For all you weekend warriors, advice for times of uncertainty.

csswizardry.com/2026/03/when...

3 weeks ago 23 6 0 1
XKCD programmer excuse cartoon, where the #1 programmer excuse for legitimately slacking off was changed from "compiling" to "token budget exhausted".

XKCD programmer excuse cartoon, where the #1 programmer excuse for legitimately slacking off was changed from "compiling" to "token budget exhausted".

3 weeks ago 6 1 1 0

Running any sort of anti-virus software?

3 weeks ago 0 0 0 0

Week 1 observations: toni.org/2026/03/13/i...

1 month ago 913 84 316 60

I'm thrilled to announce that I'll be joining Bluesky as interim CEO. I deeply believe in what this team has built and the open social web they're fighting for. More here: toni.org/2026/03/09/c...

1 month ago 2046 315 416 213
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SQLite Release 3.52.0 On 2026-03-06

SQLite PSA

sqlite.org/releaselog/3...

sqlite.org/wal.html#wal...

1 month ago 32 10 0 1

No one cares how fast it is if it is broken. That is why I still include fixing things in performance work. #webperf

1 month ago 2 0 0 0
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Performance Engineer, Backend Automattic’s products—WordPress.com, WooCommerce, Beeper, Tumblr, Jetpack, and more—serve tens of billions of page views every month from data centers around the world. The PerfOps team exists to make...

The performance team I lead at Automattic is hiring - automattic.com/work-with-us... #webperf #php #jobs #wordpress #woocommerce

1 month ago 6 6 0 0
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Add a minimal privacy-preserving secure DNS telemetry to check current version (aa12fa45) · Commits · Debian PHP Team / php · GitLab PHP Packaging

"Add a minimal privacy-preserving secure DNS telemetry to check current version" salsa.debian.org/php-team/php... - surprised and disappointed to see this #php #security #debian

1 month ago 0 0 0 0

Definitely feeling "the last 20% takes 80% of the work" right now.

1 month ago 0 0 0 0
How Does Chrome DevTools Network Throttling Actually Work?
How Does Chrome DevTools Network Throttling Actually Work? Learn what Chrome network throttling looks like behind the scenes and how it compares to system-level throttling with tools like Apple's Network Link Conditioner. Try our free website speed test:…

Many developers misinterpret what the DevTools performance test results tell them. My video below explains how Chrome implements network throttling and how it impacts your data.

Neither the bandwidth nor the latency implementation match what you'd see on a real slow network.

youtu.be/93HI4dnGjMk

2 months ago 18 8 0 1
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WebKit features for Safari 26.3 Safari 26.3 is here, with practical improvements for performance and user experience.

Safari 26.3 is here with Zstandard file compression, Navigation API’s AbortSignal for better control in single-page apps, and fixes for anchor positioning, multi-column layouts, & more. Plus fullscreen video now dims surroundings in visionOS.

webkit.org/blog/17798/webkit-features-for-safari-26-3/

2 months ago 61 9 0 0
JS-heavy approaches are not compatible with long-term performance goals I’m Sérgio, and I work with Web frontend code. Sometimes I write about it here.

It's been a while since my last blog post, so I made up for it with a wall of text 😅

This article looks at why JS-heavy web apps tend to miss their performance goals over time, what you can do to somewhat mitigate that, and ends with a plea for us to move back to the server, as an industry.

2 months ago 19 4 2 1
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Container Timing: measuring web components performance An introduction to Container Timing, a new web performance API that lets developers measure when complex components finish painting and shows how to use its native implementation now available behind ...

Container Timing is now officially Ready for Developer Testing in Chromium 145! 🚀

We want your feedback on the design and usage. Check out the details and how to try it:
blogs.igalia.com/dape/2026/02...

cc @igalia.com @developer.chrome.com

2 months ago 8 3 0 1
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Both of these websites have a 2-second LCP score – but the user experience is very different!

Learn about how to relate metrics to visitor experience on your website: www.debugbear.com/blog/web-per...

2 months ago 0 1 0 0

Why do sites keep offering to save or remember this computer, if they never, ever, ever actually remember this computer? So frustrating.

2 months ago 1 0 1 0

Days where it feels like LLMs might be the best rubber ducking experience so far - one that can talk back and often provide something useful.

2 months ago 2 0 0 0

That warm feeling of looking at a function and thinking to yourself - there is a very good chance I can make that faster.

3 months ago 3 0 0 0
Mago The Oxidized PHP Toolchain: Blazing fast linter, formatter, and static analyzer for PHP, written in Rust.

Anyone has tried out Mago - mago.carthage.software - a linter/formatter/analyzer for PHP code? I gave it a very brief run against a single PHP file and was surprised at how aggressive the defaults are. It might be a very useful tool, but I'd need to config it to be more reasonable first. #php

3 months ago 1 0 0 0

The annual tradition of going back over my last 12 days of date references to fix the year in dates that I wrote down.

3 months ago 0 0 0 0
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Joseph Scott Notes from Joseph Scott

Compression Dictionaries with Zstandard in PHP josephscott.org/blog/2026/co... #webperf

3 months ago 1 0 0 0

I am starting to think that the iOS 26 OS/UI experience equivalent of the Apple butterfly keyboard and touch bar. iOS 27 could do a full UI revert to the iOS 18 UI and be heralded as tremendous improvement. #apple

4 months ago 1 0 0 0
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Joseph Scott Notes from Joseph Scott

How to Switch Debian 13 /tmp from tmpfs to disk - josephscott.org/blog/2025/ho...

4 months ago 2 0 0 0
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With the #LogicMonitor ( couldn't find a Bluesky account ) acquisition of Catchpoint I have a request. Please revert the UI changes that were done to webpagetest.org recently. I just want my long trusted go to web perf tool back.

4 months ago 1 0 0 0
Image decoder benchmark

I'm playing around with JPEG XL's "JPEG repackaging" feature. It repackaged a 147kb JPEG down to 126kb, but on my Pixel 10, the new file takes 78ms to decode, vs 10ms for the JPEG.

At 3g+ speeds… that feels like a performance loss.

random-stuff.jakearchibald.com/apps/img-dec...

4 months ago 40 4 8 0