Paul Irish
@paul.irish
web performance and DevTools, mostly.
In '97 I wrote a paper for English class on HTML Image Maps. I haven't changed much since.
In '97 I wrote a paper for English class on HTML Image Maps. I haven't changed much since.
Meanwhile, the mobile web gmail UI m.gmail.com is so fast and delightful, despite being ~unmaintained for 10+ years.
September 11, 2025 at 2:50 AM
Meanwhile, the mobile web gmail UI m.gmail.com is so fast and delightful, despite being ~unmaintained for 10+ years.
You'll probably appreciate the mobile web gmail UI: m.gmail.com Sadly, it now requires a mobile UA. But despite being ~unmaintained for 10+ years, it's so fast and delightful.
Gmail
Gmail is email that’s intuitive, efficient, and useful. 15 GB of storage, less spam, and mobile access.
mail.google.com
August 31, 2025 at 7:10 PM
You'll probably appreciate the mobile web gmail UI: m.gmail.com Sadly, it now requires a mobile UA. But despite being ~unmaintained for 10+ years, it's so fast and delightful.
Some discussion in
github.com/tc39/proposa...
github.com/tc39/proposa...
github.com/tc39/proposa...
But.. it seems like not many advocates for 'upsert' itself. ¯\_(ツ)_/¯
github.com/tc39/proposa...
github.com/tc39/proposa...
github.com/tc39/proposa...
But.. it seems like not many advocates for 'upsert' itself. ¯\_(ツ)_/¯
Rename from "proposal-upsert" to "proposal-getorinsert" · Issue #83 · tc39/proposal-upsert
Generally "upsert" means your updating or creating. But this method seems to be getting or creating. Consider renaming this proposal from "proposal-upsert" to "proposal-getorinsert". https://x.com/...
github.com
July 30, 2025 at 11:59 PM
Some discussion in
github.com/tc39/proposa...
github.com/tc39/proposa...
github.com/tc39/proposa...
But.. it seems like not many advocates for 'upsert' itself. ¯\_(ツ)_/¯
github.com/tc39/proposa...
github.com/tc39/proposa...
github.com/tc39/proposa...
But.. it seems like not many advocates for 'upsert' itself. ¯\_(ツ)_/¯
This is hot. And aligns with some work I've been hacking on. Can I give it a whirl?
July 13, 2025 at 4:02 PM
This is hot. And aligns with some work I've been hacking on. Can I give it a whirl?
Prompts as MCP payloads are def not getting much attention but I also think they have good potential.
Interesting that Claude doesn't act on the prompt response type without extra nudging.. especially since this is all their design.
Interesting that Claude doesn't act on the prompt response type without extra nudging.. especially since this is all their design.
June 16, 2025 at 8:30 PM
Prompts as MCP payloads are def not getting much attention but I also think they have good potential.
Interesting that Claude doesn't act on the prompt response type without extra nudging.. especially since this is all their design.
Interesting that Claude doesn't act on the prompt response type without extra nudging.. especially since this is all their design.
Weirdly buried in the article:
The Nashville chief federal prosecutor (who'd lead this case?) decided to resign in protest over this case being pursued for political reasons.
The Nashville chief federal prosecutor (who'd lead this case?) decided to resign in protest over this case being pursued for political reasons.
June 6, 2025 at 11:28 PM
Weirdly buried in the article:
The Nashville chief federal prosecutor (who'd lead this case?) decided to resign in protest over this case being pursued for political reasons.
The Nashville chief federal prosecutor (who'd lead this case?) decided to resign in protest over this case being pursued for political reasons.
Sometimes I let my website draw pictures in the Profiler
June 5, 2025 at 12:52 AM
Sometimes I let my website draw pictures in the Profiler
🤨 In a v weird fit of serendipity, I *just* swished with Listerine and wanted to show my partner one of their commercials from the 90s..
This isn't the one but... Listerine was all about that text-fitting! youtu.be/o_P3HElQbsM
This isn't the one but... Listerine was all about that text-fitting! youtu.be/o_P3HElQbsM
VINTAGE COMMERCIAL - LISTERINE
YouTube video by Historic Films Stock Footage Archive
www.youtube.com
May 29, 2025 at 6:20 PM
🤨 In a v weird fit of serendipity, I *just* swished with Listerine and wanted to show my partner one of their commercials from the 90s..
This isn't the one but... Listerine was all about that text-fitting! youtu.be/o_P3HElQbsM
This isn't the one but... Listerine was all about that text-fitting! youtu.be/o_P3HElQbsM
Yeah, fair. I don't have this in a non-video blog post yet but.. here's the 10min version with actual words: youtu.be/BHqxD9qr6Gw?...
Performance debugging in DevTools
YouTube video by Chrome for Developers
www.youtube.com
May 28, 2025 at 5:59 PM
Yeah, fair. I don't have this in a non-video blog post yet but.. here's the 10min version with actual words: youtu.be/BHqxD9qr6Gw?...
100%. Applescript is super painful. Finding what API is exposed by each application.. Trying it out.. Logging. All of these things are just terrible. But yeah I don't know other mechanisms to query some of this.
May 22, 2025 at 7:28 PM
100%. Applescript is super painful. Finding what API is exposed by each application.. Trying it out.. Logging. All of these things are just terrible. But yeah I don't know other mechanisms to query some of this.
Here's my version of the same dealio. A lil ffmpeg/fzf/applescript/fish combo to screencapture the bounds of your chosen application's frontmost window. gist.github.com/paulirish/c1...
screencapture a specific application's frontmost window
screencapture a specific application's frontmost window - screencap-window.fish
gist.github.com
May 22, 2025 at 1:10 AM
Here's my version of the same dealio. A lil ffmpeg/fzf/applescript/fish combo to screencapture the bounds of your chosen application's frontmost window. gist.github.com/paulirish/c1...
The next biggest win is getting rid of the 3 render blocking requests. That'll give the LCP a 1.3✕ speedup.
trace.cafe/t/hRHAdaY3rl
(Btw it's quite fast! Nice job)
trace.cafe/t/hRHAdaY3rl
(Btw it's quite fast! Nice job)
May 21, 2025 at 4:15 PM
The next biggest win is getting rid of the 3 render blocking requests. That'll give the LCP a 1.3✕ speedup.
trace.cafe/t/hRHAdaY3rl
(Btw it's quite fast! Nice job)
trace.cafe/t/hRHAdaY3rl
(Btw it's quite fast! Nice job)
Nicely executed. The debugger UI is hot.
May 14, 2025 at 5:04 PM
Nicely executed. The debugger UI is hot.
you mean like some url sugar around this?
data:text/html;charset=utf8,<input type=checkbox>
data:text/html;charset=utf8,<input type=checkbox>
May 13, 2025 at 5:13 PM
you mean like some url sugar around this?
data:text/html;charset=utf8,<input type=checkbox>
data:text/html;charset=utf8,<input type=checkbox>