David Ross
@cdaveross.bsky.social
PNW web-performance specialist; into cooking, craft beer & cider, otter pics, & intersectional support. (He/They)
Pinned
David Ross
@cdaveross.bsky.social
· Nov 16
I was lucky enough to be interviewed by #webperf community icon @henrihelvetica.bsky.social at #PerfNow 2024.
What a whirlwind conference, it's always energizing to be around this many people interested in beating back the tide of webpage bloat & inaccessible sites
What a whirlwind conference, it's always energizing to be around this many people interested in beating back the tide of webpage bloat & inaccessible sites
Reposted by David Ross
How do you measure when a component is “ready”? ⏱️
LCP is too global; Element Timing is too specific.
🛠️ I’ve been working with Bloomberg on a new #webperf API: Container Timing. Think of it as “LCP for a web component”, providing aggregated paint timing for a subtree.
LCP is too global; Element Timing is too specific.
🛠️ I’ve been working with Bloomberg on a new #webperf API: Container Timing. Think of it as “LCP for a web component”, providing aggregated paint timing for a subtree.
February 10, 2026 at 4:06 PM
How do you measure when a component is “ready”? ⏱️
LCP is too global; Element Timing is too specific.
🛠️ I’ve been working with Bloomberg on a new #webperf API: Container Timing. Think of it as “LCP for a web component”, providing aggregated paint timing for a subtree.
LCP is too global; Element Timing is too specific.
🛠️ I’ve been working with Bloomberg on a new #webperf API: Container Timing. Think of it as “LCP for a web component”, providing aggregated paint timing for a subtree.
Reposted by David Ross
A shocking 8.5% of sites that use CDNs deliver some static content directly to end users via cloud storage! Many are not compressing or caching this content either. This comes at a significant performance cost. Details, examples and @httparchive.org stats here - paulcalvano.com/2026-02-09-s...
February 9, 2026 at 12:34 PM
A shocking 8.5% of sites that use CDNs deliver some static content directly to end users via cloud storage! Many are not compressing or caching this content either. This comes at a significant performance cost. Details, examples and @httparchive.org stats here - paulcalvano.com/2026-02-09-s...
Reposted by David Ross
Our sea otters are celebrating the Seattle Seahawks heading to the Super Bowl with fishy football treats and plenty of otter enthusiasm. 💙🦦💚
February 6, 2026 at 9:16 PM
Our sea otters are celebrating the Seattle Seahawks heading to the Super Bowl with fishy football treats and plenty of otter enthusiasm. 💙🦦💚
Reposted by David Ross
Bennie & Clovis Martin, inventors of the po' boy sandwich, to striking workers:
"We are with you till h--l freezes, and when it does, we will furnish blankets to keep you warm."
Let's bring this energy to 2026:
buttondown.com/theswordandt...
"We are with you till h--l freezes, and when it does, we will furnish blankets to keep you warm."
Let's bring this energy to 2026:
buttondown.com/theswordandt...
Notable Sandwiches #137: Po' Boy
Welcome back to Notable Sandwiches, the feature where my editor David Swanson and I trip merrily through Wikipedia’s List of Notable Sandwiches. This week, a...
buttondown.com
February 6, 2026 at 6:21 PM
Bennie & Clovis Martin, inventors of the po' boy sandwich, to striking workers:
"We are with you till h--l freezes, and when it does, we will furnish blankets to keep you warm."
Let's bring this energy to 2026:
buttondown.com/theswordandt...
"We are with you till h--l freezes, and when it does, we will furnish blankets to keep you warm."
Let's bring this energy to 2026:
buttondown.com/theswordandt...
Reposted by David Ross
@nywebperf.com is looking for speakers for April! Have you made a website faster? Can you get yourself to NYC? Let me know!
February 5, 2026 at 11:05 PM
@nywebperf.com is looking for speakers for April! Have you made a website faster? Can you get yourself to NYC? Let me know!
Reposted by David Ross
"We would have lost so much if we'd driven him away" is the justification.
But we lost all those girls. We lost the women they would have become. We lost the work they would have done. Why was his future work so much more valuable than theirs?
But we lost all those girls. We lost the women they would have become. We lost the work they would have done. Why was his future work so much more valuable than theirs?
February 5, 2026 at 9:02 PM
"We would have lost so much if we'd driven him away" is the justification.
But we lost all those girls. We lost the women they would have become. We lost the work they would have done. Why was his future work so much more valuable than theirs?
But we lost all those girls. We lost the women they would have become. We lost the work they would have done. Why was his future work so much more valuable than theirs?
Reposted by David Ross
New blog post about an experiment in measuring how rendering times are affected by the size of SVGs
www.phpied.com/measuring-sv...
www.phpied.com/measuring-sv...
Measuring SVG rendering time
The questions
Is rendering large SVGs significantly slower than smaller ones? Is there a cut-off size above which things are terrible?
And what if these SVGs were PNGs, just for giggles.
To answer t...
www.phpied.com
February 5, 2026 at 7:34 AM
New blog post about an experiment in measuring how rendering times are affected by the size of SVGs
www.phpied.com/measuring-sv...
www.phpied.com/measuring-sv...
Reposted by David Ross
“pandoc for the people”, the pandoc wasm web-app, is now available at https://pandoc.org/app/
It allows to run any kind of document conversion that pandoc supports in the browser. The documents never leave the computer, thus ensuring *full privacy*.
Conversions to pdf are done via Typst […]
It allows to run any kind of document conversion that pandoc supports in the browser. The documents never leave the computer, thus ensuring *full privacy*.
Conversions to pdf are done via Typst […]
Original post on fosstodon.org
fosstodon.org
February 4, 2026 at 9:44 AM
“pandoc for the people”, the pandoc wasm web-app, is now available at https://pandoc.org/app/
It allows to run any kind of document conversion that pandoc supports in the browser. The documents never leave the computer, thus ensuring *full privacy*.
Conversions to pdf are done via Typst […]
It allows to run any kind of document conversion that pandoc supports in the browser. The documents never leave the computer, thus ensuring *full privacy*.
Conversions to pdf are done via Typst […]
Reposted by David Ross
Reposted by David Ross
Reposted by David Ross
Here's your friendly reminder that CSS selectors are global and evaluated RTL, so if you have selectors that are very broad like `.container > div` you might be impacting performance in a measurable way 🙈
Before and after profile of server switching after some selector optimizations in @discord.com
Before and after profile of server switching after some selector optimizations in @discord.com
January 27, 2026 at 4:41 PM
Here's your friendly reminder that CSS selectors are global and evaluated RTL, so if you have selectors that are very broad like `.container > div` you might be impacting performance in a measurable way 🙈
Before and after profile of server switching after some selector optimizations in @discord.com
Before and after profile of server switching after some selector optimizations in @discord.com
Reposted by David Ross
this is truly a perfect distillation of the AI industry's ever-more-monumental public relations problem
Every single time I try to adjust my priors and give 'AI' the benefit of the doubt, something else happens which shows everyone who is pushing this is doing so with reckless disregard for the potential harms or fully cognizant of what they're breaking.
January 26, 2026 at 5:40 PM
this is truly a perfect distillation of the AI industry's ever-more-monumental public relations problem
Reposted by David Ross
Showing cross-racial solidarity is a potential death sentence. There are few things white supremacists hate more.
37 year old white male citizen with a lawful permit to carry a firearm, says the Minneapolis Police Department.
January 24, 2026 at 6:11 PM
Showing cross-racial solidarity is a potential death sentence. There are few things white supremacists hate more.
Reposted by David Ross
We could talk about whether we got the "good cyberpunk" but what's important I think is a good 50 years of film and comics were trying really, really hard to make you think about this exact sort of image, and to internalize that if you saw this sort of image you should have an intense reaction to it
Every Stephen Miller tantrum and DHS recruitment ad speaks in these existential terms about "defending your culture" to elide the fact that they need people with the courage to wear a mask while interrogating a sixth grader
January 21, 2026 at 7:41 PM
We could talk about whether we got the "good cyberpunk" but what's important I think is a good 50 years of film and comics were trying really, really hard to make you think about this exact sort of image, and to internalize that if you saw this sort of image you should have an intense reaction to it
Reposted by David Ross
Reposted by David Ross
The 2025 Web Almanac by HTTP Archive has been officially released! 🚀
We would like to thank all of our contributors from around the globe who made this extensive report possible!
Check out the full report here: almanac.httparchive.org
We would like to thank all of our contributors from around the globe who made this extensive report possible!
Check out the full report here: almanac.httparchive.org
January 16, 2026 at 3:00 AM
The 2025 Web Almanac by HTTP Archive has been officially released! 🚀
We would like to thank all of our contributors from around the globe who made this extensive report possible!
Check out the full report here: almanac.httparchive.org
We would like to thank all of our contributors from around the globe who made this extensive report possible!
Check out the full report here: almanac.httparchive.org
Reposted by David Ross
🦦🌊 #telekitneticart #formline #indigenousart
Another otter formline commission for loial otter via TG!! :>
Another otter formline commission for loial otter via TG!! :>
November 18, 2025 at 2:22 AM
🦦🌊 #telekitneticart #formline #indigenousart
Another otter formline commission for loial otter via TG!! :>
Another otter formline commission for loial otter via TG!! :>
Reposted by David Ross
I've been running an indie games studio for 15 years now, and it felt like a good time to boil down what I've learned into 4 pieces of advice:
www.pentadact.com/2026-01-08-1...
I hope it's of use, not least because goddamn I forgot how long blog posts take to write.
www.pentadact.com/2026-01-08-1...
I hope it's of use, not least because goddamn I forgot how long blog posts take to write.
January 8, 2026 at 6:02 PM
I've been running an indie games studio for 15 years now, and it felt like a good time to boil down what I've learned into 4 pieces of advice:
www.pentadact.com/2026-01-08-1...
I hope it's of use, not least because goddamn I forgot how long blog posts take to write.
www.pentadact.com/2026-01-08-1...
I hope it's of use, not least because goddamn I forgot how long blog posts take to write.
Reposted by David Ross
ICE agent kills woman, DHS tells obvious, insane lies about it: defector.com/ice-agent-ki...
ICE Agent Kills Woman, DHS Tells Obvious, Insane Lies About It | Defector
On Wednesday in Minneapolis, masked government agents apparently representing Immigration and Customs Enforcement (ICE) surrounded a stationary vehicle stopped in the middle of a residential street.…
defector.com
January 7, 2026 at 8:47 PM
ICE agent kills woman, DHS tells obvious, insane lies about it: defector.com/ice-agent-ki...
Reposted by David Ross
“It’s about being full human beings and not just means to an end. I want to live in a city that honors what you’re doing when you’re not making money: time spent on the playground with a kid or visiting a sick friend…we need bread, but we need roses too.” -Seattle Mayor Katie Wilson
January 2, 2026 at 7:13 PM
“It’s about being full human beings and not just means to an end. I want to live in a city that honors what you’re doing when you’re not making money: time spent on the playground with a kid or visiting a sick friend…we need bread, but we need roses too.” -Seattle Mayor Katie Wilson
Reposted by David Ross
The viewers are encouraged to take pieces of candy away, symbolically performing a sacrament of partaking of the body, and symbolically watching his partner waste away to nothing.
It is such a poignant and powerful piece
It is such a poignant and powerful piece
Felix Gonzalez-Torres, 1991, “Untitled”. A pile of free candy, the pile can be staged in any art gallery anywhere but must weigh 175 pounds, which was the healthy weight of Gonzalez-Torres’ partner Ross Laycock, who died of AIDS.
![[Image description: a corner in a white-walled art gallery. There is a large mound of multicolored candy piled up in the corner.]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cdvx6m3a2ssmxbgtigmrqk7d/bafkreicw3krddnt5evm7ayup5ye5d42k2hut3ytul7jjabhwoem5ara3sa@jpeg)
January 1, 2026 at 7:00 PM
The viewers are encouraged to take pieces of candy away, symbolically performing a sacrament of partaking of the body, and symbolically watching his partner waste away to nothing.
It is such a poignant and powerful piece
It is such a poignant and powerful piece
Reposted by David Ross
My contribution to this years Web Performance Calendar is all about Third Parties and Single Points of Failure (SPOF). Based on @httparchive.org data I found that 67% of websites have at least 1 render blocking third party - and quite a few of them are SPOF risks!
Web Performance Calendar day 29 with @paulcalvano.bsky.social's research on 3rd parties, SPOF, and the need to test and monitor these. 67% of sites out there have at least 1 render-blocking external dependency.
calendar.perfplanet.com/2025/third-p...
calendar.perfplanet.com/2025/third-p...
Third Parties and Single Points of Failure
You've heard it many times - third party content can easily cause an otherwise well performing website to become sluggish and slow. And depending on how this content is loaded, it can also introduce s...
calendar.perfplanet.com
December 29, 2025 at 3:20 PM
My contribution to this years Web Performance Calendar is all about Third Parties and Single Points of Failure (SPOF). Based on @httparchive.org data I found that 67% of websites have at least 1 render blocking third party - and quite a few of them are SPOF risks!
Reposted by David Ross
Can't wait for the loosened up, non-perfect, but quickly shipped AI-enhanced updates to hit my banking and insurance services next year.
Im sure there will be no issues there at all.
Im sure there will be no issues there at all.
December 26, 2025 at 4:09 PM
Reposted by David Ross
What do I mean when I say everything in Obsidian should feel instantaneous?
No more than 0.1 seconds.
The target was established in 1968 by Robert Miller and well described in 1993 by Jakob Nielsen here:
No more than 0.1 seconds.
The target was established in 1968 by Robert Miller and well described in 1993 by Jakob Nielsen here:
December 26, 2025 at 1:29 PM
What do I mean when I say everything in Obsidian should feel instantaneous?
No more than 0.1 seconds.
The target was established in 1968 by Robert Miller and well described in 1993 by Jakob Nielsen here:
No more than 0.1 seconds.
The target was established in 1968 by Robert Miller and well described in 1993 by Jakob Nielsen here:
Reposted by David Ross
Updated de Content-Visibility snippet for Chrome DevTools
- Detects existing content-visibility usage
- Finds offscreen optimization opportunities
- CLS warnings for missing contain-intrinsic-size
- Configurable thresholds
webperf-snippets.nucliweb.net/Loading/Cont...
#WebPerf #PerfTools
- Detects existing content-visibility usage
- Finds offscreen optimization opportunities
- CLS warnings for missing contain-intrinsic-size
- Configurable thresholds
webperf-snippets.nucliweb.net/Loading/Cont...
#WebPerf #PerfTools
Content Visibility – Nextra
A curated list of snippets to get Web Performance metrics to use in the browser console or as snippets on Chrome DevTools by Joan León
webperf-snippets.nucliweb.net
December 20, 2025 at 12:41 AM
Updated de Content-Visibility snippet for Chrome DevTools
- Detects existing content-visibility usage
- Finds offscreen optimization opportunities
- CLS warnings for missing contain-intrinsic-size
- Configurable thresholds
webperf-snippets.nucliweb.net/Loading/Cont...
#WebPerf #PerfTools
- Detects existing content-visibility usage
- Finds offscreen optimization opportunities
- CLS warnings for missing contain-intrinsic-size
- Configurable thresholds
webperf-snippets.nucliweb.net/Loading/Cont...
#WebPerf #PerfTools