Andy Davies
@andydavies.me
Web Performance Consultant @speedcurve.com
Vegetable grower… Eurorack synth dabbler… Bristol Bears Women’s fan
https://andydavies.me
Vegetable grower… Eurorack synth dabbler… Bristol Bears Women’s fan
https://andydavies.me
Reposted by Andy Davies
I'm excited to share a fantastic YouTube channel dedicated to Web Performance
It's a project led by 2 major references in the Web Performance community, @guaca.bsky.social & @sia.codes
www.youtube.com/@Performance...
Subscribe to stay up-to-date & learn from the best in the community!
#WebPerf
It's a project led by 2 major references in the Web Performance community, @guaca.bsky.social & @sia.codes
www.youtube.com/@Performance...
Subscribe to stay up-to-date & learn from the best in the community!
#WebPerf
PerformanceObserver
PerformanceObserver is a virtual meetup for the web performance community.
Our community is spread out around the world, and not everyone can easily access in-person tech events. Thus, our mission wa...
www.youtube.com
November 11, 2025 at 9:15 AM
I'm excited to share a fantastic YouTube channel dedicated to Web Performance
It's a project led by 2 major references in the Web Performance community, @guaca.bsky.social & @sia.codes
www.youtube.com/@Performance...
Subscribe to stay up-to-date & learn from the best in the community!
#WebPerf
It's a project led by 2 major references in the Web Performance community, @guaca.bsky.social & @sia.codes
www.youtube.com/@Performance...
Subscribe to stay up-to-date & learn from the best in the community!
#WebPerf
Reposted by Andy Davies
"third-party cookie choice" is a euphemism that needs to be thrown into the sun privacysandbox.com/news/update-...
Update on Plans for Privacy Sandbox Technologies
In this October 2025 announcement, the Privacy Sandbox team shares updates on plans for Privacy Sandbox technologies.
privacysandbox.com
November 10, 2025 at 5:33 PM
"third-party cookie choice" is a euphemism that needs to be thrown into the sun privacysandbox.com/news/update-...
Reposted by Andy Davies
One of the ways HS2 got a reputation for being expensive is because we upgrade/build motorways in short piecemeal sections. No ever proposes to price a motorway similar to the M6/M1 in one package.
November 10, 2025 at 3:54 PM
One of the ways HS2 got a reputation for being expensive is because we upgrade/build motorways in short piecemeal sections. No ever proposes to price a motorway similar to the M6/M1 in one package.
Reposted by Andy Davies
If you’ve wanted to go to #ffconf but couldn’t afford it, I have a ticket spare going.
Much rather it got used. ( my week’s focus got changed. 😞)
Ping me.
Much rather it got used. ( my week’s focus got changed. 😞)
Ping me.
November 10, 2025 at 9:33 AM
If you’ve wanted to go to #ffconf but couldn’t afford it, I have a ticket spare going.
Much rather it got used. ( my week’s focus got changed. 😞)
Ping me.
Much rather it got used. ( my week’s focus got changed. 😞)
Ping me.
Reposted by Andy Davies
China oil consumption for road transport down 9% this year.
Denmark oil consumption down 11% in 2024.
Not many similarities between the two countries but good to see the shared path before us.
A reminder that the EU spends 120bn euro per year on oil for road transport.
Denmark oil consumption down 11% in 2024.
Not many similarities between the two countries but good to see the shared path before us.
A reminder that the EU spends 120bn euro per year on oil for road transport.
"Far from a peak, China's gasoline demand is estimated to have fallen 9% in October on the year to 12.5 million tons, with average daily use roughly flat with September..."
China's oil demand is entering structural decline.
China's oil demand is entering structural decline.
EVs put an end to China's usual holiday surge in gasoline use
Tianyu Jiang took a 2,000-km (1,200-mile) road trip this month during China's national holiday week, driving in his electric vehicle from the southwestern Sichuan basin to Beijing for the first time.
www.reuters.com
November 9, 2025 at 9:31 PM
China oil consumption for road transport down 9% this year.
Denmark oil consumption down 11% in 2024.
Not many similarities between the two countries but good to see the shared path before us.
A reminder that the EU spends 120bn euro per year on oil for road transport.
Denmark oil consumption down 11% in 2024.
Not many similarities between the two countries but good to see the shared path before us.
A reminder that the EU spends 120bn euro per year on oil for road transport.
Reposted by Andy Davies
Do I know anyone who’s looking to hire a policy researcher / research manager? A friend of mine is looking - she’s super smart, she’s worked on some significant projects for the British Red Cross, Ada Lovelace and Which?. Open to perm and contract roles. Please share for reach ☺️
November 9, 2025 at 11:42 AM
Do I know anyone who’s looking to hire a policy researcher / research manager? A friend of mine is looking - she’s super smart, she’s worked on some significant projects for the British Red Cross, Ada Lovelace and Which?. Open to perm and contract roles. Please share for reach ☺️
Reposted by Andy Davies
🧪 Absolutely wonderful - Rosalind Franklin, by her sister. Learned a lot @zetkin.bsky.social
„The pile of family letters talk far more about her holidays, her friends, or living conditions in postwar Paris, than about her work. She had a love of grand scenery, and became a formidable climber.“
„The pile of family letters talk far more about her holidays, her friends, or living conditions in postwar Paris, than about her work. She had a love of grand scenery, and became a formidable climber.“
Sharing this, quite relevant this week. www.thelancet.com/journals/lan...
Remembering my sister Rosalind Franklin
Rosalind Franklin died of ovarian cancer in 1958 aged 37 years. Sympathy and feminism
have combined to give us her familiar image as a downtrodden woman scientist, brilliant
but neglected, a heroine t...
www.thelancet.com
November 9, 2025 at 8:39 AM
🧪 Absolutely wonderful - Rosalind Franklin, by her sister. Learned a lot @zetkin.bsky.social
„The pile of family letters talk far more about her holidays, her friends, or living conditions in postwar Paris, than about her work. She had a love of grand scenery, and became a formidable climber.“
„The pile of family letters talk far more about her holidays, her friends, or living conditions in postwar Paris, than about her work. She had a love of grand scenery, and became a formidable climber.“
Reposted by Andy Davies
More austerity from the “change” guy
November 8, 2025 at 12:48 PM
More austerity from the “change” guy
Reposted by Andy Davies
The moms of Montgomery County don't like Bethany Mandel because she's a jerk to trans kids, and that tells a lot about America's political realignment.
The “Likable”/“Unlikable” Political Realignment
American conservatism is a home for unlikeable people who’ve turned their unlinkability into a political project.
www.aaronrosspowell.com
November 7, 2025 at 5:51 PM
The moms of Montgomery County don't like Bethany Mandel because she's a jerk to trans kids, and that tells a lot about America's political realignment.
Reposted by Andy Davies
“When you use a JavaScript framework, that isn’t the end of your work, it’s just the beginning. You still have to write your own code that makes use of that framework. Except now your code is restricted to only what the framework can do.”
I’d even drop “JavaScript” from that sentence 😉
I’d even drop “JavaScript” from that sentence 😉
Journal: Providers
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
November 6, 2025 at 7:44 PM
“When you use a JavaScript framework, that isn’t the end of your work, it’s just the beginning. You still have to write your own code that makes use of that framework. Except now your code is restricted to only what the framework can do.”
I’d even drop “JavaScript” from that sentence 😉
I’d even drop “JavaScript” from that sentence 😉
Reposted by Andy Davies
For #PerfNow folks who want to go even deeper on Long Animation Frames, @andydavies.me wrote the definitive guide.
www.speedcurve.com/blog/guide-l...
www.speedcurve.com/blog/guide-l...
SpeedCurve | The Definitive Guide to Long Animation Frames (LoAF)
LoAF lets you identify problem scripts, quantify the impact of third-party scripts, and improve the user experience. Here's everything you need to know to get started.
www.speedcurve.com
October 31, 2025 at 9:18 AM
For #PerfNow folks who want to go even deeper on Long Animation Frames, @andydavies.me wrote the definitive guide.
www.speedcurve.com/blog/guide-l...
www.speedcurve.com/blog/guide-l...
Reposted by Andy Davies
Slides from my @perfnow.nl talk — How Fast Is Fast Enough? — are up!
If you’re at #PerfNow (or even if you’re not) I’d love to talk about creating a delightful experience for your users.
speakerdeck.com/tammyeverts/...
If you’re at #PerfNow (or even if you’re not) I’d love to talk about creating a delightful experience for your users.
speakerdeck.com/tammyeverts/...
How Fast Is Fast Enough? [PerfNow 2025]
It sounds like a simple question, but if you've been working in web performance long enough, you know the answer is far from straightforward. In this ke…
speakerdeck.com
October 30, 2025 at 9:30 AM
Slides from my @perfnow.nl talk — How Fast Is Fast Enough? — are up!
If you’re at #PerfNow (or even if you’re not) I’d love to talk about creating a delightful experience for your users.
speakerdeck.com/tammyeverts/...
If you’re at #PerfNow (or even if you’re not) I’d love to talk about creating a delightful experience for your users.
speakerdeck.com/tammyeverts/...
Reposted by Andy Davies
I love heatmaps so much! They're the best way to get instant insight into where #webperf issues are lurking across your site.
Taking it even further, you also get breakdowns across dimensions like page label, browser, device, and location. *chef's kiss*
👉 www.speedcurve.com/blog/new-hea...
Taking it even further, you also get breakdowns across dimensions like page label, browser, device, and location. *chef's kiss*
👉 www.speedcurve.com/blog/new-hea...
SpeedCurve | NEW! Heatmaps now available on Favorites Dashboards
We’ve finally added heat maps to your Favorites (custom) dashboards — one of our most requested features ever! It feels great to finally make this available to everyone.
www.speedcurve.com
November 6, 2025 at 7:39 PM
I love heatmaps so much! They're the best way to get instant insight into where #webperf issues are lurking across your site.
Taking it even further, you also get breakdowns across dimensions like page label, browser, device, and location. *chef's kiss*
👉 www.speedcurve.com/blog/new-hea...
Taking it even further, you also get breakdowns across dimensions like page label, browser, device, and location. *chef's kiss*
👉 www.speedcurve.com/blog/new-hea...
Reposted by Andy Davies
November 6, 2025 at 4:34 PM
It's funny to see @dalevince.com wingeing about the cost of the dual carriageway that's needed for Forest Green Rovers new ground as if it's something new
stroudtimes.com/road-woes-st...
The proposal he originally submitted in 2016 clearly showed they were proposing to dual the A419
stroudtimes.com/road-woes-st...
The proposal he originally submitted in 2016 clearly showed they were proposing to dual the A419
November 5, 2025 at 2:07 PM
It's funny to see @dalevince.com wingeing about the cost of the dual carriageway that's needed for Forest Green Rovers new ground as if it's something new
stroudtimes.com/road-woes-st...
The proposal he originally submitted in 2016 clearly showed they were proposing to dual the A419
stroudtimes.com/road-woes-st...
The proposal he originally submitted in 2016 clearly showed they were proposing to dual the A419
Reposted by Andy Davies
2025 conference photos are up
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
performance.now() 2025 photos
perfnow.nl
November 5, 2025 at 11:24 AM
2025 conference photos are up
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
perfnow.nl/2025/pix/pho...
(though I need to consult a speculation rules expert at some point)
Feel like I need to sleep for a week…
November 5, 2025 at 10:47 AM
Feel like I need to sleep for a week…
Reposted by Andy Davies
Such a mystery, what MASS DISABLING EVENT could have happened after 2019 to cause this?
The number of people aged between 16 and 34 who are out of work due to long-term sickness increased by 76% between 2019 and 2024
UK ‘sliding into avoidable crisis’, major review into workplace sickness warns
The number of people aged between 16 and 34 who are out of work due to long-term sickness increased by 76% between 2019 and 2024
www.independent.co.uk
November 5, 2025 at 9:14 AM
Such a mystery, what MASS DISABLING EVENT could have happened after 2019 to cause this?
Reposted by Andy Davies
75 years ago today, European nations signed this Convention, so the Holocaust could not be repeated. Beware those who want this to end.
November 4, 2025 at 7:28 PM
75 years ago today, European nations signed this Convention, so the Holocaust could not be repeated. Beware those who want this to end.
Reposted by Andy Davies
Cars the U.K are up to 55% larger today than they were in the 1970s and there are twice the number of motors on our roads as there were 30 years ago, but anti-Low Traffic Neighbourhood and anti-cycle lane campaigners keep claiming they 'cause congestion'.
Okay.
Okay.
November 4, 2025 at 9:34 AM
Cars the U.K are up to 55% larger today than they were in the 1970s and there are twice the number of motors on our roads as there were 30 years ago, but anti-Low Traffic Neighbourhood and anti-cycle lane campaigners keep claiming they 'cause congestion'.
Okay.
Okay.
Reposted by Andy Davies
This was performance.now() 2025
YouTube video by Web Conferences Amsterdam
www.youtube.com
November 4, 2025 at 11:51 AM
Reposted by Andy Davies
why concentration of wealth is bad for everyone
November 3, 2025 at 3:55 PM
why concentration of wealth is bad for everyone
Reposted by Andy Davies
First Light on Primrose Lane, 2022, painting by Peak District artist Clare Allan. #WomensArt
November 3, 2025 at 8:40 AM
First Light on Primrose Lane, 2022, painting by Peak District artist Clare Allan. #WomensArt
Reposted by Andy Davies
Captain Picard has a thing or two to teach BBC News
Picard ethics tip: The fact that a conflict has many sides does not imply that every side has merit.
November 2, 2025 at 9:55 PM
Captain Picard has a thing or two to teach BBC News
Yay… my LinkedIn is all in Dutch…
November 2, 2025 at 12:04 PM
Yay… my LinkedIn is all in Dutch…