Christian "Schepp" Schaefer
@schepp.dev
Nick: Schepp | Into Front-End & WebPerf | Co-Host https://workingdraft.de | Co-Organizer https://fronteersconf.org, https://www.meetup.com/webworker-nrw & https://css.cafe | Co-Author https://wir-zaehlen.com
Reposted by Christian "Schepp" Schaefer
And here it is – in full monochromatic glory – my documentation of beyond tellerrand 2025 in Berlin: florian.photo/gallery/btco...
#btconf #monochrome #documentary #photography / cc @beyondtellerrand.com
Reposts appreciated. 🙏
#btconf #monochrome #documentary #photography / cc @beyondtellerrand.com
Reposts appreciated. 🙏
beyond tellerrand Berlin 2025
This is my documentation of beyond tellerrand in Berlin, November 2025.
florian.photo
November 8, 2025 at 1:44 PM
And here it is – in full monochromatic glory – my documentation of beyond tellerrand 2025 in Berlin: florian.photo/gallery/btco...
#btconf #monochrome #documentary #photography / cc @beyondtellerrand.com
Reposts appreciated. 🙏
#btconf #monochrome #documentary #photography / cc @beyondtellerrand.com
Reposts appreciated. 🙏
@beyondtellerrand.bsky.social since there are so.many D&D falls at #btconf I have to ask you the question where can I still get this D&D starter set as a present for a young boy (in German)? Seems to be out of stock everywhere 🙁
November 6, 2025 at 11:35 AM
@beyondtellerrand.bsky.social since there are so.many D&D falls at #btconf I have to ask you the question where can I still get this D&D starter set as a present for a young boy (in German)? Seems to be out of stock everywhere 🙁
@rich-harris.dev also thank you for one more tool: Ramjet! ✨😊
October 31, 2025 at 4:17 PM
@rich-harris.dev also thank you for one more tool: Ramjet! ✨😊
Liege ich richtig damit, dass die Arbeitgeber, welche Einschnitte von den GKV verlangen, dieselben sind, die laufend Mitarbeiter – und damit Beitragszahler – durch Outshoring, Roboter und KI ersetzen?
www.n-tv.de/politik/Beri...
www.n-tv.de/politik/Beri...
Arbeitgeber wollen kostenlose Mitversicherung von Ehepartnern beenden
Den gesetzlichen Krankenversicherungen droht laut einer Prognose ein Milliarden-Defizit. Nicht das Geld sei das Problem, es müsse nur richtig eingesetzt werden, sagt Arbeitgeberpräsident Dulger. Der ...
www.n-tv.de
October 31, 2025 at 8:07 AM
Liege ich richtig damit, dass die Arbeitgeber, welche Einschnitte von den GKV verlangen, dieselben sind, die laufend Mitarbeiter – und damit Beitragszahler – durch Outshoring, Roboter und KI ersetzen?
www.n-tv.de/politik/Beri...
www.n-tv.de/politik/Beri...
@therealnooshu.bsky.social Hey Matt, I read between the lines that you might be at perfnow and I kept my eyes peeled for you, but haven't been able to spot you. Is it correct that I will find you around the "Brits pack", being Andy, Harry and Ryan? Then I'll come by and say hi!
October 31, 2025 at 7:33 AM
@therealnooshu.bsky.social Hey Matt, I read between the lines that you might be at perfnow and I kept my eyes peeled for you, but haven't been able to spot you. Is it correct that I will find you around the "Brits pack", being Andy, Harry and Ryan? Then I'll come by and say hi!
Reposted by Christian "Schepp" Schaefer
Fellow #perfnow fellows, a reminder that PerfPlanet calendar is coming this December for another edition. And it needs YOU. Please ask if you have any contribution ideas or concerns calendar.perfplanet.com/contribute/
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:
...
calendar.perfplanet.com
October 30, 2025 at 4:59 PM
Fellow #perfnow fellows, a reminder that PerfPlanet calendar is coming this December for another edition. And it needs YOU. Please ask if you have any contribution ideas or concerns calendar.perfplanet.com/contribute/
@marcysutton.com Great talk!! 👏🫶🚀
As we had the topic of skip links: would you support the idea of also putting in skip links into your page for skipping content blocks in reverse direction for folks that tabbed too far or wanted to peak behind a block and decide they wanna go back up? #perfnow
As we had the topic of skip links: would you support the idea of also putting in skip links into your page for skipping content blocks in reverse direction for folks that tabbed too far or wanted to peak behind a block and decide they wanna go back up? #perfnow
October 30, 2025 at 11:06 AM
@marcysutton.com Great talk!! 👏🫶🚀
As we had the topic of skip links: would you support the idea of also putting in skip links into your page for skipping content blocks in reverse direction for folks that tabbed too far or wanted to peak behind a block and decide they wanna go back up? #perfnow
As we had the topic of skip links: would you support the idea of also putting in skip links into your page for skipping content blocks in reverse direction for folks that tabbed too far or wanted to peak behind a block and decide they wanna go back up? #perfnow
@tammyeverts.com weird that too fast does lead to lower conversion rates. #perfnow
October 30, 2025 at 8:53 AM
@tammyeverts.com weird that too fast does lead to lower conversion rates. #perfnow
Reposted by Christian "Schepp" Schaefer
There’s a new type of CSS scroll-state query coming: “scrolled”.
This one remembers the last direction you scrolled into, which you can use to build “hidey bars”: when scrolling down (or having scrolled down), the hidey bar hides itself. When then scrolling back up, the hidey bar reveals itself.
This one remembers the last direction you scrolled into, which you can use to build “hidey bars”: when scrolling down (or having scrolled down), the hidey bar hides itself. When then scrolling back up, the hidey bar reveals itself.
October 22, 2025 at 4:48 PM
There’s a new type of CSS scroll-state query coming: “scrolled”.
This one remembers the last direction you scrolled into, which you can use to build “hidey bars”: when scrolling down (or having scrolled down), the hidey bar hides itself. When then scrolling back up, the hidey bar reveals itself.
This one remembers the last direction you scrolled into, which you can use to build “hidey bars”: when scrolling down (or having scrolled down), the hidey bar hides itself. When then scrolling back up, the hidey bar reveals itself.
Stumbled upon this comment to the below article and I think they've nailed it.
October 21, 2025 at 6:42 PM
Stumbled upon this comment to the below article and I think they've nailed it.
Reposted by Christian "Schepp" Schaefer
Less than a month away - every #FFConf ticket comes with a free bucket of pure unadulterated inspiration, but caution: side effects of buzzing head have been known.
(Plus, prices switch to late bird in a few weeks - spread the word!)
2025.ffconf.org
(Plus, prices switch to late bird in a few weeks - spread the word!)
2025.ffconf.org
October 20, 2025 at 12:24 PM
Less than a month away - every #FFConf ticket comes with a free bucket of pure unadulterated inspiration, but caution: side effects of buzzing head have been known.
(Plus, prices switch to late bird in a few weeks - spread the word!)
2025.ffconf.org
(Plus, prices switch to late bird in a few weeks - spread the word!)
2025.ffconf.org
Reposted by Christian "Schepp" Schaefer
Now that the outage is over, I'm sitting down to write this week's Web Weekly newsletter.
If core web development (you know: HTML, CSS and JS) are your thing you should check it out!
webweekly.email
If core web development (you know: HTML, CSS and JS) are your thing you should check it out!
webweekly.email
October 20, 2025 at 12:26 PM
Now that the outage is over, I'm sitting down to write this week's Web Weekly newsletter.
If core web development (you know: HTML, CSS and JS) are your thing you should check it out!
webweekly.email
If core web development (you know: HTML, CSS and JS) are your thing you should check it out!
webweekly.email
Reposted by Christian "Schepp" Schaefer
Did a new one
August 7, 2025 at 6:46 PM
Did a new one
Reposted by Christian "Schepp" Schaefer
I've been mourning our loss of web events in AoNZ lately (rip Webstock, Gather, Codemania, KiwiFOO et al) and this gets at why. I'm so looking forward to @beyondtellerrand.com and @ffconf.org next month.
October 14, 2025 at 6:14 PM
I've been mourning our loss of web events in AoNZ lately (rip Webstock, Gather, Codemania, KiwiFOO et al) and this gets at why. I'm so looking forward to @beyondtellerrand.com and @ffconf.org next month.
Reposted by Christian "Schepp" Schaefer
Es ist die neue Folge online gegangen. Wir schauen erneut auf eine Episode der ARD-Doku "BÄM - Die Geschichte des Comics" (heute: franko-belgisch).
Zum 3. Mal mit dabei ist @schueller-p.bsky.social und zum 1. Mal @schepp.dev vom @workingdraft.de Podcast.
binnerscomicclub.de/podcast/ooc-...
Zum 3. Mal mit dabei ist @schueller-p.bsky.social und zum 1. Mal @schepp.dev vom @workingdraft.de Podcast.
binnerscomicclub.de/podcast/ooc-...
OOC: Je t'BÄM - franko-belgische Comics (feat. Freunde des Clubs) - Binners Comic Club
In der dritten Folge der ARD-Doko "BÄM - Die Geschichte der Comics" dreht sich alles um franko-belgische Comics, pardon, bandes dessinées. Der Club hat sich für diese Folge wieder einmal wortgewandte ...
binnerscomicclub.de
October 19, 2025 at 6:57 PM
Es ist die neue Folge online gegangen. Wir schauen erneut auf eine Episode der ARD-Doku "BÄM - Die Geschichte des Comics" (heute: franko-belgisch).
Zum 3. Mal mit dabei ist @schueller-p.bsky.social und zum 1. Mal @schepp.dev vom @workingdraft.de Podcast.
binnerscomicclub.de/podcast/ooc-...
Zum 3. Mal mit dabei ist @schueller-p.bsky.social und zum 1. Mal @schepp.dev vom @workingdraft.de Podcast.
binnerscomicclub.de/podcast/ooc-...
Reposted by Christian "Schepp" Schaefer
I often see the word 'kerning' used incorrectly by CSS heads when the term they're actually looking for to describe letter spacing is 'tracking'. Let me explain using CSS terminology!
Tracking is the same as gap in flex layouts; consistent spacing applied across the entire text.
But what if... 🧵
Tracking is the same as gap in flex layouts; consistent spacing applied across the entire text.
But what if... 🧵
October 16, 2025 at 10:12 AM
I often see the word 'kerning' used incorrectly by CSS heads when the term they're actually looking for to describe letter spacing is 'tracking'. Let me explain using CSS terminology!
Tracking is the same as gap in flex layouts; consistent spacing applied across the entire text.
But what if... 🧵
Tracking is the same as gap in flex layouts; consistent spacing applied across the entire text.
But what if... 🧵
Reposted by Christian "Schepp" Schaefer
WordPress Accessibility Day 2025 is free. All sessions are held virtually via Zoom—attend from anywhere! Sessions are live-captioned and have sign language interpretation.
Register here for free: 2025.wpaccessibility.day/attendee-reg...
Schedule here: 2025.wpaccessibility.day/schedule/
Register here for free: 2025.wpaccessibility.day/attendee-reg...
Schedule here: 2025.wpaccessibility.day/schedule/
Register to Attend - WordPress Accessibility Day 2025
It's free, and all sessions will be held virtually via Zoom, so you can attend from anywhere. Sessions will be live captioned and have sign language interpretation.
2025.wpaccessibility.day
October 16, 2025 at 11:47 AM
WordPress Accessibility Day 2025 is free. All sessions are held virtually via Zoom—attend from anywhere! Sessions are live-captioned and have sign language interpretation.
Register here for free: 2025.wpaccessibility.day/attendee-reg...
Schedule here: 2025.wpaccessibility.day/schedule/
Register here for free: 2025.wpaccessibility.day/attendee-reg...
Schedule here: 2025.wpaccessibility.day/schedule/
Reposted by Christian "Schepp" Schaefer
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...
➡️ 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
October 16, 2025 at 10:16 AM
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...
➡️ 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...
Reposted by Christian "Schepp" Schaefer
Firefox now supports view transitions, the command and commandfor HTML attributes, and the moveBefore() method.
www.firefox.com/en-US/firefo...
www.firefox.com/en-US/firefo...
Firefox 144.0, See All New Features, Updates and Fixes
www.firefox.com
October 14, 2025 at 3:20 PM
Firefox now supports view transitions, the command and commandfor HTML attributes, and the moveBefore() method.
www.firefox.com/en-US/firefo...
www.firefox.com/en-US/firefo...
@kevinpowell.co @henrihelvetica.bsky.social listened to your discussion / musings yesterday on meetups and conferences. I agree with your diagnosis! And would like to add that meetups also fail because people are not sitting in the office anymore which used to make swinging by at a meetup easy.
Fronteers Dark Mode, Friday, October 3rd, Dordrecht
Join us at Cinema de Witt in Dordrecht for our after work conference.
fronteersconf.org
October 14, 2025 at 9:42 AM
@kevinpowell.co @henrihelvetica.bsky.social listened to your discussion / musings yesterday on meetups and conferences. I agree with your diagnosis! And would like to add that meetups also fail because people are not sitting in the office anymore which used to make swinging by at a meetup easy.
Reposted by Christian "Schepp" Schaefer
We should be asking this
c o n s t a n t l y.
c o n s t a n t l y.
October 13, 2025 at 3:54 AM
We should be asking this
c o n s t a n t l y.
c o n s t a n t l y.
Reposted by Christian "Schepp" Schaefer
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
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
October 9, 2025 at 5:00 PM
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
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
HTML trivia: WAI-ARIA 1.3’s aria-brailleroledescription (27 chars) is the longest non-data-* HTML attribute.
Runners-up: onwebkitanimationiteration (26), onsecuritypolicyviolation (25), onwebkitfullscreenchange (24), disablepictureinpicture (23), webkitallowfullscreen (21).
Runners-up: onwebkitanimationiteration (26), onsecuritypolicyviolation (25), onwebkitfullscreenchange (24), disablepictureinpicture (23), webkitallowfullscreen (21).
October 7, 2025 at 8:57 AM
HTML trivia: WAI-ARIA 1.3’s aria-brailleroledescription (27 chars) is the longest non-data-* HTML attribute.
Runners-up: onwebkitanimationiteration (26), onsecuritypolicyviolation (25), onwebkitfullscreenchange (24), disablepictureinpicture (23), webkitallowfullscreen (21).
Runners-up: onwebkitanimationiteration (26), onsecuritypolicyviolation (25), onwebkitfullscreenchange (24), disablepictureinpicture (23), webkitallowfullscreen (21).
Reposted by Christian "Schepp" Schaefer
Wir wollen Kindern in der #Ukraine ein Lächeln schenken! Wir gehen wieder als Weihnachtsmänner an die Front und verteilen Geschenke. Ihr könnt euch beteiligen, indem ihr Geschenke kauft. Zusammen sorgen wir für eine frohe Weihnacht! berlinstory.sumupstore.com/produkt/gesc...
October 7, 2025 at 4:16 AM
Wir wollen Kindern in der #Ukraine ein Lächeln schenken! Wir gehen wieder als Weihnachtsmänner an die Front und verteilen Geschenke. Ihr könnt euch beteiligen, indem ihr Geschenke kauft. Zusammen sorgen wir für eine frohe Weihnacht! berlinstory.sumupstore.com/produkt/gesc...
Reposted by Christian "Schepp" Schaefer
ESLint depends on sponsorships to pay maintainers. We're operating at a deficit with roughly a junior engineer's salary supporting a dozen maintainers plus awarding outside contributions. Please talk to your company about sponsoring ESLint:
https://eslint.org/donate
https://eslint.org/donate
October 6, 2025 at 4:57 PM
ESLint depends on sponsorships to pay maintainers. We're operating at a deficit with roughly a junior engineer's salary supporting a dozen maintainers plus awarding outside contributions. Please talk to your company about sponsoring ESLint:
https://eslint.org/donate
https://eslint.org/donate