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Reposted by Eric Portis

Jen Simmons @jensimmons.bsky.social · 2h

Largest Contentful Paint (from Core Web Vitals) is now available in Safari Technology Preview.

webkit.org/blog/17504/r...

Release Notes for Safari Technology Preview 230

Safari Technology Preview Release 230 is now available for download for macOS Tahoe and macOS Sequoia.

webkit.org

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Reposted by Eric Portis

Jake Archibald @jakearchibald.com · 13h

I dug into progressive image rendering and found a bunch of common assumptions aren't quite true.

➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more

jakearchibald.com/2025/present...

The present and potential future of progressive image rendering

Exploring progressive image rendering across JPEG, PNG, WebP, AVIF, and JPEG XL.

jakearchibald.com

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Eric Portis @ericportis.com · 1d

As long as we're ceding little disconnected nubs (“pene-exclaves”!) to Canada: en.wikipedia.org/wiki/Point_R...

Point Roberts, Washington - Wikipedia

en.wikipedia.org

Reposted by Eric Portis

Mat “Wilto” Marquis @wil.to · 2d

At last, today is the day. I am immensely proud to announce that JavaScript for Everyone is here.

Tell a friend, tell a Slack channel — write it on a slip of paper, fold it once, and slide it across your boss' desk without breaking eye contact. _It's time to get weird._

piccalil.li/javascript-f...

JavaScript for Everyone

A high quality, expansive written course that will elevate your JavaScript skills to a level you never thought was achievable.

piccalil.li

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Reposted by Eric Portis

Piccalilli @piccalil.li · 2d

It's here. JavaScript for Everyone is now available to…everyone!

The amount of effort and experience packed into this course is unbelievable and we know you're going to love it.

Get yours for £189, down from £249, for 2 weeks and super-charge your career prospects

piccalilli.link/js4e-launch-...

JavaScript for Everyone

A high quality, expansive written course that will elevate your JavaScript skills to a level you never thought was achievable.

piccalilli.link

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Eric Portis @ericportis.com · 2d

👀 @giannirosato.com has been producing some fantastic image compression tools giannirosato.com/blog/post/oa...

giannirosato.com

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Reposted by Eric Portis

Mat “Wilto” Marquis @wil.to · 3d

This is it. 86,791 words. 836 emdashes. 625 `const`, 141 `let`, 16 `var`. One (1) reference to the pause music from Battletoads for the NES.

Spread the word: JavaScript for Everyone launches tomorrow.

A Majora's-Mask-style "Dawn of The Final Day. 24 Hours Remain" title card, but using the JavaScript for Everyone Atari-style type and branding. The background is made up of two low-angle perspective views of rectangles on grids that meet at a sharp line, resembling a horizon.

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Eric Portis @ericportis.com · 6d

Plus I like the idea of doing composition in HTML (<special-validation-form><magic-form><form>) although that also seems... like it's not likely to work unless components have been explicitly designed for it (double shadow DOMs?)

Eric Portis @ericportis.com · 6d

It's prettier than—e.g.

display: contents considered harmful

display: contents has a long and storied history when it comes to accessibility..

ericwbailey.website

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Eric Portis @ericportis.com · 6d

Have you written anything about the "why not just wrap it?" question? (I don't currently have a strong opinion but find the discussion, e.g. front-end.social/@zachleat@za..., fascinating)

Front-End Social

front-end.social

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Reposted by Eric Portis

firefoxdevtools.bsky.social @firefoxdevtools.bsky.social · 7d

As an experiment, we (the Firefox team) wanted to try a new way to get feedback on which Interop proposals matter most.

So, here's a web app where you can rank the proposals you care about, giving us data we can use when reviewing which ones to champion.

interop-rank.jakearchibald.com

Interop Feature Ranking

Rank the web platform features you care most about

interop-rank.jakearchibald.com

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Eric Portis @ericportis.com · 9d

Anyways, after this go-ahead double, I hugged my wife and high-fived a bunch of strangers; the TV broadcast apparently cut to a guy crying tears of relief and joy; baseball!

Reposted by Eric Portis

Jake Archibald @jakearchibald.com · 9d

Folks who want to see JPEG-XL supported in more browsers, what is it about the format that attracts you to its use on the web?

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Eric Portis @ericportis.com · 9d

In order:
1. Better encoding efficiency than AVIF = faster/cheaper builds.
2. Ability to losslessly cut weight from existing libraries of JPEGs.
3. I still believe progressive decodes = good UX.

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Eric Portis @ericportis.com · 13d

Safari 26 on Sequoia: buggy and gets laggy as heck for me. Had to switch from Compact to Separate tabs because I often stopped being able to close tabs w/ mouse. Scrolling, interacting with the URL bar, & DevTools often getting multiple-second lags until I close all tabs and quit/re-open. Just me?

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Eric Portis @ericportis.com · 14d

For one thing, captures the experience of being on the other side of an argument with a motivated implementer, uh, quite well.

Screenshot of a paragraph from the article. It reads, "I pushed back and proposed alternatives and compromised and proposed alternatives and pushed back and pushed back and pushed back and pushed back and finally gave up; and those were only my attempts to push back. Others also pushed back and pushed back and asked for a pause and pushed back and pushed back and recanted their earlier support and pushed back and asked for a pause and asked for a pause and pushed back." Every action described in the paragraph (e.g., "pushed back", "asked for a pause") is a hyperlink, linking to the discussion in question.

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Eric Portis @ericportis.com · 14d

If you work in web standards, you RFC 2119 MUST read this article. alice.boxhall.au/articles/a-t...

A threat model for accessibility on the web - Alice

A explanation of the primary threat to accessibility on the web, and a call to action for the web standards community

alice.boxhall.au

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Reposted by Eric Portis

Lea Verou, PhD @lea.verou.me · 17d

🔥 New blog post!

Covering, among other things:

- Why making simple things easy and complex things possible is not enough
- How to maximize your UI’s signal-to-noise ratio
- Why you can’t uncover friction through user feedback
- How to prioritize user needs

lea.verou.me/blog/2025/us...

In the economy of user effort, be a bargain, not a scam • Lea Verou

User effort is a currency. To create a product users love, design the tradeoffs of use case complexity to user effort with the same care you design your pricing scheme.

lea.verou.me

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Eric Portis @ericportis.com · 23d

From left-pad to Left Behind

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Eric Portis @ericportis.com · 24d

Cloudinary repeatedly ran into this, years ago. It as eventually straightened out, but I forget the details.

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Eric Portis @ericportis.com · 29d

I believe I am in one of the farthest cities from OKC in the lower forty eight but ——— no tolls!

Google maps showing 1d 6h drive time between Oklahoma City, Oklahoma and Bellingham, Washington

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Eric Portis @ericportis.com · Sep 16

Three and a half gallons of prunes. We did what we could 🫡

Six large jars and one medium jar of prunes on a kitchen table. There are some lovely dahlias in the background.

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Eric Portis @ericportis.com · Sep 11

I have a lil post going about render blocking and how to skip it when you’re *disabling* cross-document view transitions (because prefers-reduced-motion). Does “do no harm” count as “real nice”?

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Eric Portis @ericportis.com · Sep 5

But you see *I* also want to be able to share components that run code in any server side stack and deliver different markup depending on external API calls, or the specifics of the request, with the option to run that code at either build or delivery time, and also I want a pony

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Eric Portis @ericportis.com · Sep 5

next you'll be telling me to call a singular "panini sandwich" a "panino"??? this is america bob

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