TL;DR: Pick L or M error correction depending on expected conditions. It is recommended to increase the error correction level unless it results in the QR code resolution (aka version) increasing. Many generators have this option. If you own the destination domain, use a short URL that is descriptive and contains/redirects to the page/resource in question, such as http://zooberlin.de/map?qr → https://www.zooberlin.de/wp-content/uploads/2020/06/karte_mobile.pdf?utm_campaign=poster (fictional example).
I used Voyager’s “Add image” button, which uploads the image on my instance.
Anyway, all your posts showed “Failed to load image 😢” on Voyager until I opened one in the browser and got past Cloudflare’s verification after 4 attempts.
Took me too long to get past Cloudflare DDoS protection...
The pic:
Her name means “freezing” in German
The general public knew little about aperture and depth of field back then but I don't think the “keyhole effect” fooled anyone.
@DirtyCNC
@lemmynsfw.com