Redditor creates working anime QR codes using Stable Diffusion

Too right! Also great for men as well as women.

All magic wands are amazing (not just the hitachi ones, but try to find a decent brand like hitachi, bedgeek). Trust me guys, they're so good in many spots; treat yourself!

You could use an unnecessarily big QR code for extra correction bits to mitigate this somewhat (up to the maximum correction standard (30%?) even if that means 41 cell code instead of a 33 cell one). For URLs another size hack is to include meaningless extra data (a qstring parameter or anchor that won't be interpreted). This doesn't increase the error protection in itself, but gives the fancier more data to work with so it can produce better visual results without losing more of the signal correction strength. Using the generator at https://qrbtf.com/ someone linked above, try the “C2” style with https://qrbtf.com/ and https://qrbtf.com/#some-extra-data-to-increase-the-image-siz... to see the difference this makes.

The issue with artsy QR codes often isn't the individual bit flips, but that they often include large areas of all black or all white which can make it harder for the reader to pick up the actually correct bits if the viewing angle and lighting aren't perfect. The standard includes 8 mask patterns that you can freely choose from, the intention being that you pick the one which gives most black/white variation in the final result, so there is as few low-contrast areas as possible. With improvements in cameras and processing built into QR scanners these days this is becoming less of a concern, but if you need your code to be reliably readable by older devices, probably stay away from the fancy tricks.

The fancy tricks are cool though, worth all the caveats if they match your stylistic needs.

Your pedantry is neither appropriate nor correct. Manga is most often black and white purely because of time and budget constraints, not because manga's style is defined as black and white. There are tons of full-color manga, and many that become popular have color editions released.

What I've seen most is the line put above the vowel, resulting in animē (but difficult to type). As there is no additional (fourth) syllable, a-ni-mee would be more logical to me, rather than a-ni-me-ee or a-ni-me-e.

That being said, I like how the triple vowel makes it clear it's not the same sound as in say meet. (This gives me the idea to change my name to tuuukkkah...)

Three 'e's is not correct. ー is a single mora, so should usually be one vowel. E.g. ラーメン is raamen not raaamen.

ショ is sho (or syo if you use Japan-style romanization) not tsu.

So the proper romanisation is something like 'animeeshon'. That said, romanisation is often done inconsistently, e.g. Osaka vs. oosaka.

Yeah that’s pretty much it. Katakana words are mostly just imported foreign words

There’s “moving images” (動画), but that’s used for video in general, not specific to animation

Assuming you mean a sex shop, 'hentai' would refer to basically the entire store's stock, so I think you'd need to be a bit more specific! It doesn't automatically refer to manga or anime like it does in the West.