2025/Düsseldorf/Demos
Düsseldorf 2025 Demos was the final session of the IndieWebCamp Düsseldorf 2025, with demos by everyone there!
Watch: ▶️ 38:42s
Projects
Create Day ideas and projects
Tantek
- ✅ fix his PHP to work PHP 8 (and https://asin.cc also! no more PHP7 on my host!) thanks
Schepp - __ maybe implement "ISBN %ISBN%" auto-linking to open library, also urn:isbn:9780307476463 or isbn:9780307476463
- ✅ figure out a regex to detect ISBN usage in plain text
- \b(ISBN-10(\s?:\s?|\s)|ISBN-13(\s?:\s?|\s)(978|979)|(ISBN|isbn)(\s?:\s?|\s)(978|979)?)(\s|-)?(\d(\s|-)?){9}(\d|X)\b
- not supporting "ISBN-No.:" because the "No." is redundant like "Machine" in "ATM Machine" and should show as an error to the user
- ✅ document regex: ISBN#Regex_to_detect_ISBN_usage_plain_text
- ✅ figure out a regex to detect ISBN usage in plain text
Christian
- ✅ help
Tantek Çelik with PHP 8 - ✅ create Schepp
- experiment with Custom Highlight API to format markdown text?
- Use ChatGPT to implement Tantek Çelik's rich text syntax http://tantek.pbworks.com/w/page/59905776/Markdown
- Measuring energy impact of
Joschi Kuphal's page together with him
Joschi
- work on measuring energy light vs dark mode
Gunnar
- idk / tbd
Daniel
- ✅ sending WebSub notifications for my site (not completly automated, though)
- make it easier again to post any content to my site again
Jakob
- fix laptop, depending on that, want to come up with a plan for how structure my website
- Tantek Çelik says: see URL design
Demos
Notes from the chat logs:
Tantek Çelik
- Tantek Çelik, https://tantek.com/
- He did some house keeping stuff
- One thing he wanted to do today was to port his polyglot (JS/PHP) parsing libraries to PHP 8, which he did together with [schepp] and he succeeded. And he likes PHP 8 very much as it's a lot faster.
- The other project he had was to write a tool that would parse out ISBN numbers from a text and replace the text with the cover image of the corresponding book from Open Library.
- And he succeeded with that, too. He developed a regex which would match all kinds of variations of writing down an ISBN
Dave
- https://letorey.co.uk/
- Next presenter is Dave who spontaneously joined the Indie Web Camp today
- Dave upgraded his personal website's static site generator to eleventy 3.0.1 and ES modules
- He then proceeded to have a change log automatically compiled into a list of changes
Calum Ryan
Calum Ryan, https://calumryan.com/- also spontaneously joined this morning
- He focused on his personal web page which he built with Kirby CMS and which he likes to be as accessible as poissble.
- Today he took care of a lot of little things that he improved, like better markup for all the places that display dates
- He also moved certain things around to make it better for people who like to change their font size
Daniel Pietzsch
- https://danielpietzsch.com
- He connected his page to a WebSub hub in order to be able to send push notifications about updates to subscribers
- How that works is that during the build process (Jekyll) a POST request is ent to the hub which then proceeds to fetching the website's feed to discover new items and notify subscribers about those
Joschi Kuphal
- Joschi Kuphal, https://jkphl.is/
- He was experimenting with methods to try to make his personal website more sustainable (even though it is a pretty simple one-pager)
- First he was playing around with different kinds of tools to measure the page's co2 footprint in order to be able to quantify progress he makes
- He found all kinds of tool that do that, like ecograder or the built-in Firefox energy profiler
- He found that the resuts of all these tools are rather flaky
- He started with 8 requests with 235 KB
- First thing was to recompress the image in another format (WebP) and he also replaced two fonts with one variable font.
- He then proceeded to implement three different (display) modes for his site. The first two were light and dark mode, to which he added a black and white "eco" mode
- Reason being that OLED display use less energy the more black something is
- The black & white mode also allowed him to further compress the image by leaving away all color
Matthias Ott
Matthias Ott, https://matthiasott.com/- also joined spontaneously today
- He tried to fix a bug in a Webmention plugin for Craft CMS
- A few years back when he joined his first IWC, he created a Webmention plugin for Cratf CMS 2
- Since then he didn't update it, but recently got contacted by the Craft CMS creator himself who wanted to update the plugin together with Matthias
- They released it in March
- One of the improvements were the view in the backend
- Brandon, that creator did most of the programming, while Matthias helped with his knowledge about Webmentions and edge cases
- Matthias then proceeds to show all the "quality of life" improvements that went into the new version of it
Jakob
- http://jb-plurmedia.de/
- He created a tic tac toe game that he embedded on his page and that would store data in local storage
- He also wrote down a looong list of ideas and things to do
Christian Schaefer
- showed off a Tantek syntax (http://tantek.pbworks.com/w/page/59905776/Markdown) to HTML converter which he hacked together in a very short time with the help of ChatGPT