Paul Calvano
@paulcalvano.bsky.social
đ€ 603
đ„ 127
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New
@httparchive.org
analysis about sites adding AI Bots and Crawlers to their robots.txt files. While robots.txt doesn't "block" bots by itself, it's a clear demonstration of the preferences of site owners and the sentiment towards AI crawlers on today's web.
paulcalvano.com/2025-08-21-a...
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AI Bots and Robots.txt
Thereâs been a lot of discussion lately around AI crawlers and bots, which are used to train LLMs and/or fetch content on behalf of their users. In the past few weeks Iâve seen blog posts about the am...
https://paulcalvano.com/2025-08-21-ai-bots-and-robots-txt/
3 months ago
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This Thursday at 6pm the NYC WebPerf Meetup is running another in person "Meet for Speed" session. We'll be taking requests from attendees for sites to do a web performance analysis on.
www.meetup.com/web-performa...
Have a site you'd like us to analyze? Add it here -
bit.ly/meet4speed-s...
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[In-person] Meet for SPEED, Thu, Jul 24, 2025, 6:00 PM | Meetup
Join up for an opportunity to work together on optimizing our sites. Have a site you'd like us to analyze? Add it here - [https://bit.ly/meet4speed-submit](https://bit.ly/
https://www.meetup.com/web-performance-ny/events/308528786/
4 months ago
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Tonight at 6pm the NYC WebPerf Meetup is running another in person "Meet for Speed" session. We'll be taking requests from attendees for sites to do a web performance analysis on. Fastly will be hosting us at their NYC office.
www.meetup.com/web-performa...
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[In-person] Meet for SPEED, Thu, Dec 19, 2024, 6:00 PM | Meetup
Join up for an opportunity to work together on optimizing our sites. Have a site you'd like us to analyze? Add it here - [https://bit.ly/meet4speed-submit](https://bit.ly/
https://www.meetup.com/web-performance-ny/events/304709044/?eventOrigin=group_upcoming_events
11 months ago
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The video of my talk from the Performance Now conference in Amsterdam was posted today.
#perfnow
add a skeleton here at some point
11 months ago
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This Friday afternoon I'll be at the Boston Web Performance meetup giving my talk on "Performance Mistakes". If you are in the Boston area and interested in web performance, join us!
www.meetup.com/boston-web-p...
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Performance Mistakes, Fri, Dec 6, 2024, 4:30 PM | Meetup
December's meetup will feature Paul Calvano, on his return from the PerfNow conference in Amsterdam. **Agenda** * 4:30 pm: Arrive & networking * 5:00 pm: Talk starts * 5:
https://www.meetup.com/boston-web-performance/events/304542099/
11 months ago
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reposted by
Paul Calvano
Philip Tellis
12 months ago
If you missed
@paulcalvano.bsky.social
at
@perfnow.bsky.social
, and happen to be in the Boston area next week, he'll be speaking at the Boston Web Performance December meetup. Sign up on meetup:
www.meetup.com/boston-web-p...
December 6th â 4:30pm â Akamai HQ in Cambridge.
#webperf
#perfmatters
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Performance Mistakes, Fri, Dec 6, 2024, 4:30 PM | Meetup
December's meetup will feature Paul Calvano, on his return from the PerfNow conference in Amsterdam. **Agenda** * 4:30 pm: Arrive & networking * 5:00 pm: Talk starts * 5:
https://www.meetup.com/boston-web-performance/events/304542099/
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Last week I gave a talk at the
#PerfNow
conference titled âPerformance Mistakesâ. I started off explaining a bit about Etsyâs blameless culture, and how itâs ok to make mistakes. Then I shared 17 common
#webperf
mistakes using
@httparchive.org
data, with examples.
www.slideshare.net/slideshow/pe...
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Performance Now '24- Performance Mistakes - Final.pdf
Performance Now '24- Performance Mistakes - Final.pdf - Download as a PDF or view online for free
https://www.slideshare.net/slideshow/performance-now-24-performance-mistakes-final-pdf/273431101
12 months ago
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reposted by
Paul Calvano
Sia Karamalegos
12 months ago
Great start to
#perfnow
this year with
@tammyeverts.bsky.social
and
@csswizardry.com
! For those of you looking for the general web perf starter pack, here it is! Lots of new folks since last time I shared it
go.bsky.app/RVWSVqe
add a skeleton here at some point
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reposted by
Paul Calvano
Rick Viscomi
12 months ago
The all new performance chapter of the 2024 Web Almanac written by Jevgenija Zigisova and
@inesakrap.bsky.social
almanac.httparchive.org/en/2024/perf...
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Performance | 2024 | The Web Almanac by HTTP Archive
Performance chapter of the 2024 Web Almanac covering Core Web Vitals, with deep dives into the Largest Contentful Paint, Cumulative Layout Shift, and Interaction to Next Paint metrics and their diagno...
https://almanac.httparchive.org/en/2024/performance
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reposted by
Paul Calvano
Stoyan Stefanov
12 months ago
Fellow
#perfnow
attendee, the PerfPlanet advent calendar is looking for articles for the 2024 edition. Please come talk to me if youâre considering an idea for a post but youâre not sure and you need a second opinion
calendar.perfplanet.com/contribute/
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Contribute
Passionate about a topic? Working on a new tool? Have a technique you want to teach? Research you've done? Tell the web performance community! Send your articles to
[email protected]
. Please include: ...
https://calendar.perfplanet.com/contribute/
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reposted by
Paul Calvano
Nic Jansma
12 months ago
Took 2 mins at
#PerfNow
to talk about the RUM Community Group in W3C for anyone doing RUM. It's free and easy to join if you're interested!
www.w3.org/community/ru...
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reposted by
Paul Calvano
Jason Grigsby
12 months ago
Yesterday during my #perfnow talk, I mentioned the Web Performance Slack. If youâd like to join the Slack, use this link before Nov 25:
join.slack.com/t/webperfâŠ
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