Damn, I broke my Atom feed (and a reader let me know, that’s cool!).

I run vnu on all HTML and CSS files after each build of the website, but I don’t run a feed validator. 😬 Time to change that.

@movq@www.uninformativ.de Congrats, how did you break it? :-)

@lyse@lyse.isobeef.org Putting HTML into the feed. It should be XHTML. 🤪 (I used <img ...> instead of <img .../>.)

Okay, I’m using the “official” validator now:

https://github.com/w3c/feedvalidator

That repo is supposed to be a website/webservice, though. The feedvalidator directory contains the actual validator. I’m using this wrapper on top: https://movq.de/v/94b5b8978c/

@movq@www.uninformativ.de I see. I just use CDATA (and still have the XHTML trailing slash for <img … />). But of course, it also has its drawbacks: https://waspdev.com/articles/2026-05-11/avoid-using-cdata-in-rss I might just move away from it.

Everything is a web service these days. :-/